This is the Garmin Descent Mk3 43mm Dive Computer Features: DIVE MODES Get multiple dive modes for single and multiple gas dives (including nitrox and trimix), gauge, apnea, apnea hunt and closed-circuit rebreather. DIVE READINESS TOOL This Garmin first technology shows how lifestyle factors such as sleep, exercise, stress and jet lag can affect your body - to help gauge when you are best prepared to dive. YOU&';RE A DIVER UNDERNEATH Land or sea, this compact dive computer is built for both of your worlds. DIVEVIEW MAPS Color maps on your wrist offer bathymetric depth contours and more than 4,000 dive sites to help you discover new places to dive and get oriented. CUSTOMIZABLE DIVE MODES Add additional screens for each dive mode that features the fields you want to see. DIVE LOG This feature automatically syncs with the Garmin Dive app on your compatible smartphone, allowing you to share and review data, track gear, post photos, take notes and more. DIVE-FOCUSED DESIGN With its bright 1.2" AMOLED color display, sapphire lens, 200-meter dive-rated case and leakproof metal inductive buttons, this watch is built to go deep. LONG BATTERY LIFE Stay in the water longer with up to 30 hours in dive mode plus up to 10 days in smartwatch mode. GARMIN DIVE APP Pair the app with your Descent dive computer to automatically sync and upload your dive logs. LUME MODE To aid readability and help maintain night vision, an ambient light sensor gives a green luminescence to your watch face in low-light conditions. DIVE COMPASS Built-in ABC sensors, including an underwater compass, help navigate every part of your dive. SURFACE GPS Track your entry and exit points on the surface with advanced satellite connectivity. REFERENCE POINT Use this GPS tool for surface navigation to a dive site, so you can drop right onto your target every time. VARIOMETER This tool helps you monitor your freedive descent and ascent rates through tone and vibration feedback. BIG NUMBERS MODE Get a simplified dive screen on your wrist, with larger text to see critical diving data. TIDE DATA Stay up to date on ocean conditions by pairing your Descent device with your compatible smartphone. INREACHA(R) DEVICE COMPATIBLE Pair with inReach devices1 and the inReach dive case for satellite messaging off-grid. SPORTS APPS Use preloaded activity profiles for trail running, swimming, running, biking, hiking, rowing, skiing, golfing and more. SURF ACTIVITY Record the number of waves surfed, maximum speed reached, distance traveled and more. SURFLINEA(R) CAMERA Create a video of every wave you ride in front of a Surfline camera with Surfline Sessions(TM) technology. Use the Surfline widget to see tide, wave height, wind and surf rating for each of the five nearest surf spots2. BACKCOUNTRY SKI AND SNOWBOARD Get ascent and descent data along with metrics such as cadence, stride length and grade. VO2 MAX See your current fitness level, and track changes over time to set goals, evaluate progress and more. RECOVERY TIME Know how long you need to recover before your next high-effort workout based on your latest training. DAILY SUGGESTED WORKOUTS View your entire week of daily suggested workouts, which adapt after every run or ride. ANIMATED WORKOUTS Follow animated workouts for cardio, strength, yoga and Pilates workouts on the watch screen. WRIST-BASED HEART RATE The watch constantly samples your heart rate3 to help you gauge how hard you work during activities. PULSE OX SENSOR Track your blood oxygen saturation while you&';re awake or asleep, and gain awareness of how you&';re adapting to altitude4. JET LAG ADVISER Help to minimize the effects of jet lag with guidance on light exposure, sleep schedule and exercise. ENDURANCE SCORE This measurement uses your VO2 max, training loads and other factors to show how training affects your ability to sustain prolonged physical efforts. HILL SCORE Based on your VO2 max and training history, this feature measures your strength and endurance for running uphill. GARMIN COACH Train for physical challenges with expert coaching and a dynamic training plan keyed to your goals and performance. SLEEP MONITORING AND SLEEP SCORE Understand your body&';s recovery with sleep score, breakdown of your sleep stages and detailed insights for improved sleep quality3. WOMEN&';S HEALTH TRACKING Track and log your menstrual cycle or pregnancy to get exercise and nutrition education. SATIQ(TM) TECHNOLOGY Get superior positioning accuracy with multi-band GPS while optimizing battery life. MULTICONTINENT TOPO MAPS Preloaded TopoActive maps from around the world keep your explorations on track. SKIVIEW(TM) MAPS View run names and difficulty ratings for more than 2,000 preloaded ski resorts worldwide. ABC SENSORS Navigate your next trail with an altimeter, barometer and 3-axis electronic compass. PACEPRO(TM) TECHNOLOGY Plan race-day strategy with GPS-based pace guidance for a selected course or distance. COURSES WITH TURN-BY-TURN DIRECTIONS Create or find existing courses in the Garmin Connect(TM) app, or sync from your favorite third-party platforms, and get turn-by-turn directions. ROUND-TRIP ROUTING Enter how far you want to go, and get suggested routes that will bring you back; even use TrendLine(TM) routing to find the best local paths. SAFETY AND TRACKING FEATURES If you feel unsafe or if your watch senses that an incident occurred, your watch will send a message with your live location5. MUSIC Download songs and playlists from your Spotify, Deezer or Amazon Music accounts for phone-free listening. GARMIN PAY(TM) CONTACTLESS PAYMENTS Breeze through checkout lines or transit systems with participating providers. SMART NOTIFICATIONS Receive emails, texts and alerts on your watch when paired with your iPhoneA(R) or Android(TM) smartphone. CONNECT IQ(TM) STORE Add watch faces, data fields and apps to your paired smartwatch. This advanced dive computer and smartwatch, sized for smaller wrists, comes with Garmin innovations to help prepare you to make the most of your diving experience - plus multisport training and smart features for your active life out of the water. Specs BATTERY LIFE (SMARTWATCH MODE) Up to 10 days (4 days always-on) DISPLAY TYPE AMOLED TOUCHSCREEN WATER RATING Dive (200 meters) SLEEP SCORE AND INSIGHTS - YES TRAINING READINESS - YES TRAINING STATUS yes (improved) DAILY SUGGESTED WORKOUTS yes (improved) MULTI-BAND GPS - YES BUILT-IN MAPPING - YES GARMIN PAY(TM) - YES MUSIC STORAGE - YES LENS MATERIAL - sapphire crystal BEZEL MATERIAL - stainless steel CASE MATERIAL fiber - reinforced polymer with stainless steel rear cover QUICKFIT(TM) WATCH BAND COMPATIBLE - yes (20 mm) STRAP MATERIAL - silicone PHYSICAL SIZE - 43 x 43 x 14.15 mm, Fits wrists with the following circumference, Silicone band: 128-224 mm, Extra long silicone band: 128-360 mm. WEIGHT - no band: 53.5 g, silicone band: 72.5 g LEAKPROOF INDUCTIVE BUTTONS - Yes DISPLAY SIZE 1.2" (30.4 mm) diameter DISPLAY RESOLUTION 390 x 390 pixels COLOR DISPLAY - Yes BATTERY LIFE - Smartwatch: Up to 10 days (4 days always-on), Battery Saver Watch Mode: Up to 12 days, GPS Only: Up to 28 hours (22 hours always-on ), All Satellite Systems: Up to 20 hours (16 hours always-on), All Satellite Systems + Multi-band: Up to 17 hours (14 hours always-on), All Satellite Systems + Music: Up to 6 hours, Max Battery GPS: Up to 44 hours, Expedition GPS: Up to 10 days, Dive Mode: Up to 30 hours CHARGING METHOD Garmin proprietary clip charger MEMORY/HISTORY 32 GB Clock Features TIME/DATE - Yes GPS TIME SYNC - Yes AUTOMATIC DAYLIGHT SAVING TIME - Yes ALARM CLOCK - Yes TIMER - Yes STOPWATCH - Yes SUNRISE/SUNSET TIMES - Yes Health & Wellness Monitoring WRIST-BASED HEART RATE (CONSTANT, EVERY SECOND) - Yes DAILY RESTING HEART RATE - Yes ABNORMAL HEART RATE ALERTS - yes (high and low) RESPIRATION RATE (24X7) PULSE OX BLOOD OXYGEN SATURATION FITNESS AGE - yes (in app) BODY BATTERY(TM) ENERGY MONITOR - Yes ALL-DAY STRESS - Yes RELAXATION BREATHING TIMER - Yes BREATHWORK - Yes SLEEP yes (advanced) - Yes HYDRATION yes (in Garmin Connect(TM)) - Yes WOMEN&';S HEALTH yes (in Garmin Connect(TM)) - Yes HEALTH SNAPSHOT - Yes JET LAG ADVISER - Yes Sensors GPS - Yes GLONASS - Yes GALILEO - Yes SATIQ(TM) TECHNOLOGY - Yes GARMIN ELEVATE(TM) WRIST HEART RATE MONITOR - Yes PULSE OX BLOOD OXYGEN SATURATION MONITOR - Yes BAROMETRIC ALTIMETER - Yes COMPASS - Yes GYROSCOPE - Yes ACCELEROMETER - Yes THERMOMETER - Yes AMBIENT LIGHT SENSOR - Yes DEPTH SENSOR - Yes Daily Smart Features CONNECTIVITY BluetoothA(R), ANT+A(R), Wi-FiA(R), Subwave(TM)CONNECT IQ(TM) (DOWNLOADABLE WATCH FACES, DATA FIELDS, WIDGETS AND APPS) - Yes ON-DEVICE CONNECT IQ(TM) STORE - Yes SMART NOTIFICATIONS - Yes TEXT RESPONSE/REJECT PHONE CALL WITH TEXT (ANDROID(TM) ONLY) - Yes VIEW IMAGES FROM NOTIFICATIONS ON WATCH (ANDROID(TM) ONLY) - Yes MORNING REPORT - Yes CALENDAR - Yes WEATHER FORECASTS - Yes REALTIME SETTINGS SYNC WITH GARMIN CONNECT(TM) MOBILE - Yes BATTERY SAVER (CUSTOMIZABLE LOW POWER WATCH) - Yes CONTROLS SMARTPHONE MUSIC - Yes PLAYS AND CONTROLS WATCH MUSIC - Yes FIND MY PHONE - Yes FIND MY WATCH - Yes VIRBA(R) REMOTE - Yes SMART TRAINER CONTROL - Yes PAIRS WITH GARMIN CONNECT(TM) MOBILE - Yes SMARTPHONE COMPATIBILITY iPhoneA(R), Android(TM) STOCKS - Yes RED SHIFT MODE - Yes Activity Profiles GYM Strength, HIIT, Cardio, Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing MULTISPORT Swimming/Running, Triathlon WELLNESS Walking, Pilates, Yoga INDOOR RUNNING Treadmill Running, Indoor Track Running, Virtual Running OUTDOOR RUNNING Running, Outdoor Track Running, Trail Running, Ultra Running OUTDOOR RECREATION Hiking, Indoor Climbing, Bouldering, Climbing, Hunting, Horseback Riding, Golfing, Disc Golf, Archery CYCLING Biking, Road Biking, Mountain Biking, Gravel Biking, Bike Commuting, Bike Touring, eBiking, eMountain Biking, Indoor Biking, Cyclocross, BMX SWIM Pool Swimming, Open Water Swimming ON THE WATER Stand Up Paddleboarding, Rowing, Kayaking, Surfing, Kiteboarding, Windsurfing, Fishing, Boating, Sailing, Sail Racing, Water Skiing, Wakeboarding, Wakesurfing, Tubing, Snorkeling, Sailing Expedition, Whitewater MOTOR SPORTS Motorcycling, Overlanding, Motocrossing, ATVing, Snowmobiling RACKET SPORTS Tennis, Pickleball, Badminton, Squash, Table Tennis, Padel, Platform Tennis, Racquetball SNOW & WINTER Skiing, Snowboarding, Backcountry Snowboarding, XC Classic Skiing, Backcountry Skiing, Ice Skating, Snowshoeing TEAM SPORTS Basketball, Volleyball, Field Hockey, Ice Hockey, Football/Soccer, American Football, Lacrosse, Rugby, Ultimate Disc, Cricket, Softball, Baseball IN THE RING Boxing, Mixed Martial Arts OTHER ACTIVITY PROFILES Jumpmaster, Tactical Safety and Tracking Features INCIDENT DETECTION DURING SELECT ACTIVITIES - Yes INCIDENT DETECTION ALERT ON PHONE FOR - Yes WEARABLES - Yes ASSISTANCE - Yes LIVETRACK - Yes GROUP LIVETRACK - Yes LIVE EVENT SHARING - Yes Tactical Features STEALTH MODE - Yes NIGHT VISION MODE - Yes DUAL GRID COORDINATES - Yes KILL SWITCH - Yes XERO(TM) LOCATIONS - Yes BALLISTICS SOLVER yes (unlock required) Gaming Features GAMING ACTIVITY - Yes GAMEON(TM) APP COMPATIBLE - Yes Diving Features DIVE ACTIVITY MAXIMUM OPERATING DEPTH 200 meters SINGLE-GAS MODE - Yes MULTI-GAS MODE - Yes GAUGE MODE - Yes APNEA MODE - Yes APNEA HUNT MODE - Yes DECOMPRESSION MODEL Buhlmann ZHL-16c with gradient factors NITROX SUPPORT - Yes TRIMIX SUPPORT - Yes CLOSED CIRCUIT REBREATHER (CCR) GAS MIXES Air, Nitrox and Trimix, up to 100% O2; 1 bottom gas and up to 11 deco and/or backup gasses. PO2 Up to 2.0 with customizable deco PO2 setting AUTO START/END DIVE - Yes CUSTOM END-DIVE TIMEOUT yes (20s to 10 m) SAFETY STOP yes (customizable off/3min/5min) DEEP STOPS yes (using custom gradient factors) CUSTOMIZABLE CONSERVATISM yes (low/medium/high or custom using gradient factors) DIVE ASCENT/DESCENT RATE INDICATOR AUTOMATIC ALTITUDE ADJUSTMENT NO FLY TIME - Yes DIVE PLANNER yes (basic NDL + multi-gas deco planner) TIDES - Yes BACKLIGHT yes (configurable time and intensity; auto-on at depth) AUTOMATICALLY SAVES DIVE ENTRY AND EXIT LOCATIONS - Yes CUSTOM DIVE DATA SCREENS - YesSYNC DIVE LOG TO GARMIN DIVE(TM) MOBILE APP ALERTS & ALARMS Audible and vibration alarms for ascent rate, PO2, CNS/OTU, NDL, deco, gas switching, tank pressure, gas consumption rate. Customizable (up to 40) audible and/or vibration per dive mode, based on depth or time 3-AXIS DIVE COMPASS yes (with adjustable heading, quick change to 90R, 90L and reciprocal). Indicates degrees and direction back to set heading MISSED DECO LOCKOUT yes (can be disabled prior to dive with user acknowledgement) RESIDUAL TISSUE LOADING RESET yes (on the surface with user acknowledgement) SURFACE DIVER STATUS WIDGET yes (surface interval, N2/HE loading, CNS, OTU and tissue compartment status) Boating Features AVAILABLE BOATING PROFILES Boating, Sailing, Sail Racing ANCHOR ALARM - Yes AUTOPILOT CONTROL - Yes BOAT DATA STREAMING CIQ VIRTUAL STARTING LINE - Yes COUNTDOWN TIMER - Yes TACK ASSIST MODE - Yes BUILT-IN BAROMETER AND TIDE TABLES yes (downloadable tides) WEARABLE TROLLING MOTOR REMOTE - Yes Activity Tracking Features STEP COUNTER - Yes MOVE ALERTS (DISPLAYS ON DEVICE AFTER A PERIOD OF INACTIVITY) - Yes AUTO GOAL (LEARNS YOUR ACTIVITY LEVEL AND ASSIGNS A DAILY STEP GOAL) - Yes CALORIES BURNED - Yes FLOORS CLIMBED - Yes DISTANCE TRAVELED - Yes INTENSITY MINUTES - Yes TRUEUP(TM) - Yes MOVE IQ(TM) - Yes GARMIN CONNECT(TM) CHALLENGES APP - Yes Gym & Fitness Equipment CARDIO WORKOUTS - Yes STRENGTH WORKOUTS - Yes HIIT WORKOUTS - Yes YOGA WORKOUTS - Yes PILATES WORKOUTS - Yes ON-SCREEN WORKOUT ANIMATIONS - Yes ON-SCREEN WORKOUT MUSCLE MAPS - Yes AUTOMATIC REP COUNTING - Yes Training, Planning and Analysis Features CUSTOMIZABLE DATA PAGES - Yes DOWNLOADABLE TRAINING PLANS - Yes COURSE GUIDANCE - Yes HR ZONES - Yes HR ALERTS - Yes HR CALORIES - Yes % HR MAX - Yes % HRR - Yes RECOVERY TIME - Yes AUTO MAX HR - Yes RACE GLANCE/WIDGET - Yes HRV STATUS - Yes HRV STRESS TEST (MEASURES YOUR HEART RATE VARIABILITY WHILE STANDING STILL, FOR 3 MINUTES, TO PROVIDE YOU WITH AN ESTIMATED STRESS LEVEL; THE SCALE OF THIS IS 1 TO 100; LOW SCORES INDICATE LOWER STRESS LEVELS) yes (with compatible accessory) HR BROADCAST (BROADCASTS HR DATA OVER ANT+A(R) TO PAIRED DEVICES) RESPIRATION RATE (DURING EXERCISE) yes (with compatible accessory) GPS SPEED AND DISTANCE CUSTOMIZABLE ACTIVITY PROFILES AUTO PAUSEA(R) INTERVAL TRAINING IMPROVED INTERVAL (INCLUDES OPEN REPEATS, INTERVALS DATA PAGE, REST SCREEN AND AUTO DETECTION) ADVANCED WORKOUTS POWER MODES - CUSTOMIZABLE IN-ACTIVITY BATTERY SETTINGS - Yes HRM RUNNING PACE AND DISTANCE - Yes AUTO LAPA(R) - Yes MANUAL LAP - Yes REST TIMER - Yes CONFIGURABLE LAP ALERTS - Yes HEAT AND ALTITUDE ACCLIMATION - Yes VO2 MAX (RUN) - Yes VO2 MAX (TRAIL RUN) - Yes REALTIME STAMINA - Yes ENDURANCE SCORE - Yes LOAD RATIO - Yes TRAINING LOAD - Yes TRAINING LOAD FOCUS - Yes TRAINING EFFECT - Yes TRAINING EFFECT (ANAEROBIC) - Yes PRIMARY BENEFIT (TRAINING EFFECT LABELS) - Yes CUSTOM ALERTS- Yes AUDIO PROMPTS- Yes FINISH TIME- Yes VIRTUAL PARTNER- Yes RACE AN ACTIVITY- Yes AUTO MULTISPORT ACTIVITIES - Yes MANUAL MULTISPORT ACTIVITIES - Yes GARMIN LIVE SEGMENTS - Yes STRAVA LIVE SEGMENTS - Yes ROUND-TRIP COURSE CREATOR (RUNNING/CYCLING)Yes TRENDLINE(TM) POPULARITY ROUTING - Yes TOUCH AND/OR BUTTON LOCK - Yes HOT KEYS - Yes AUTO SCROLL - Yes ACTIVITY HISTORY ON WATCH - Yes PHYSIO TRUEUP - Yes UNIFIED TRAINING STATUS - Yes Running Features AVAILABLE RUN PROFILES - Running, Outdoor Track Running, Treadmill Running, Indoor Track Running, Trail Running, Virtual Running, Ultra Running GPS-BASED DISTANCE, TIME AND PACE - Yes RUNNING DYNAMICS - Yes VERTICAL OSCILLATION AND RATIO - Yes GROUND CONTACT TIME AND BALANCE - Yes STRIDE LENGTH (REAL TIME) - YesCADENCE (PROVIDES REAL-TIME NUMBER OF STEPS PER MINUTE) - Yes RUNNING POWER - Yes GRADE-ADJUSTED PACE - Yes PERFORMANCE CONDITION - Yes LACTATE THRESHOLD yes (with compatible accessory) PACEPRO(TM) PACING STRATEGIES - Yes RUN WORKOUTS - Yes HILL SCORE - Yes TRAIL RUN AUTO CLIMB - Yes RACE PREDICTOR - Yes COURSE- AND WEATHER-SPECIFIC RACE PREDICTOR - Yes FOOT POD CAPABLE - Yes RUN/WALK/STAND DETECTION - Yes Golfing Features PRELOADED WITH 43,000 COURSES WORLDWIDE YARDAGE TO F/M/B (DISTANCE TO FRONT, MIDDLE AND BACK OF GREEN) - Yes YARDAGE TO LAYUPS/DOGLEGS - Yes MEASURES SHOT DISTANCE (CALCULATES EXACT YARDAGE FOR SHOTS FROM ANYWHERE ON COURSE) automatic - Yes DIGITAL SCORECARD - Yes CUSTOM TARGETS - Yes STAT TRACKING (STROKES, PUTTS PER ROUND, GREENS AND FAIRWAYS HIT) - Yes GARMIN AUTOSHOT(TM) - Yes FULL VECTOR MAP - Yes AUTO COURSEVIEW UPDATES - Yes GREEN VIEW WITH MANUAL PIN POSITION - Yes HAZARDS AND COURSE TARGETS - Yes PINPOINTER - Yes PLAYSLIKE DISTANCE - Yes TOUCH-TARGETING (TOUCH TARGET ON DISPLAY TO SEE THE DISTANCE TO ANY POINT) - Yes HANDICAP SCORING - Yes TEMPO TRAINING - Yes ROUND TIMER/ODOMETER - Yes AUTOMATIC CLUB TRACKING COMPATIBLE (REQUIRES ACCESSORY) - Yes WIND SPEED AND DIRECTION (REQUIRES CONNECTION TO GARMIN GOLF APP) - Yes VIRTUAL CADDIE - Yes PAIRS WITH GARMIN GOLF APP - Yes TOURNAMENT LEGAL - Yes GREEN CONTOURS (WITH GARMIN GOLF - Yes MEMBERSHIP) - Yes Outdoor Recreation POINT-TO-POINT NAVIGATION - Yes BREAD CRUMB TRAIL IN REAL TIME - Yes BACK TO START - Yes TRACBACKA(R) - Yes ULTRATRAC MODE - Yes AROUND ME MODE - Yes REFERENCE POINT - Yes UP AHEAD - Yes NEXTFORK(TM) NAVIGATION - Yes ELEVATION PROFILE - Yes DISTANCE TO DESTINATION - Yes BAROMETRIC TREND INDICATOR WITH STORM ALERT - Yes CLIMBPRO(TM) ASCENT PLANNER - Yes VERTICAL SPEED - Yes TOTAL ASCENT/DESCENT - Yes REST TIMER (ULTRA RUN ONLY) - Yes AUTO REST - Yes FUTURE ELEVATION PLOT - Yes PRELOADED ROAD AND TRAIL MAPS - Yes PRELOADED SKI RESORT MAPS - Yes DOWNLOADABLE CARTOGRAPHY SUPPORT - Yes GPS COORDINATES - Yes SIGHT &';N GO - Yes AREA CALCULATION yes (via Connect IQ(TM)) FISH FORECAST - Yes PROJECTED WAYPOINT - Yes SUN AND MOON INFORMATION - Yes EXPEDITION GPS ACTIVITY - Yes TIDES - Yes TIDE GLANCE - Yes Cycling Features COURSES - Yes BIKE LAP AND LAP MAXIMUM POWER (WITH POWER SENSOR) - Yes RACE AN ACTIVITY - Yes ALERTS (TRIGGERS ALARM WHEN YOU REACH GOALS INCLUDING TIME, DISTANCE, HEART RATE OR CALORIES) - Yes FTP (FUNCTIONAL THRESHOLD POWER) yes (with compatible accessory) - Yes POWER CURVE AND % FTP WORKOUTS - Yes CYCLE MAP (ROUTABLE CYCLING-SPECIFIC STREET MAP) - Yes MTB GRIT & FLOW - Yes ADVANCED CYCLING DYNAMICS - Yes COMPATIBLE WITH VECTOR(TM) AND RALLY(TM) (POWER METERS) - Yes COMPATIBLE WITH VARIA VISION(TM) (HEAD-MOUNTED DISPLAY) - Yes COMPATIBLE WITH VARIA(TM) RADAR (REAR-FACING RADAR) - Yes COMPATIBLE WITH VARIA(TM) LIGHTS - Yes SPEED AND CADENCE SENSOR SUPPORT (W/SENSOR) - Yes POWER METER COMPATIBLE - Yes POWER GUIDE - Yes Swimming Features OPEN-WATER SWIM METRICS (DISTANCE, PACE, STROKE COUNT/RATE, STROKE DISTANCE, SWIM EFFICIENCY (SWOLF), CALORIES) - yes POOL SWIM METRICS (LENGTHS, DISTANCE, PACE, STROKE COUNT, SWIM EFFICIENCY (SWOLF), CALORIES) - yes STROKE TYPE DETECTION (FREESTYLE, BACKSTROKE, BREASTSTROKE, BUTTERFLY) (POOL SWIM ONLY) - yes DRILL LOGGING (POOL SWIM ONLY) - yes BASIC REST TIMER (UP FROM 0) (POOL SWIM ONLY) - yes "REPEAT ON" REST TIMER (POOL SWIM ONLY) - yes AUTO REST (POOL SWIM ONLY) - yes TIME AND DISTANCE ALERTS - yes PACING ALERTS (POOL SWIM ONLY) - yes COUNTDOWN START (POOL SWIM ONLY) - yes POOL SWIM WORKOUTS- yes CRITICAL SWIM SPEED - yes UNDERWATER WRIST-BASED HEART RATE - yes HEART RATE FROM EXTERNAL HRM (REAL-TIME DURING RESTS, INTERVAL AND SESSION STATS DURING RESTS, AND AUTOMATIC HEART RATE DOWNLOAD POST-SWIM) - yes (with HRM-Tri, HRM-Swim, HRM-Pro or HRM-Pro Plus) Garmin Descent Mk3 USER MANUALS Garmin Descent Mk3 SOFTWARE