This is the Casio G-SHOCK GA-100 Series an Analog-Digital Watch Watch Features: Case size (Lx; Wx; H) 55 x; 51.2 x; 16.9 mm Weight - 70 g Case / bezel material - Resin Band - Resin Band Construction - Shock Resistant, Magnetic Resistant Water resistance - 200-meter water resistance Power supply and battery life - Approx. battery life: 2 years on CR1220 Product specs Glass - Mineral Glass World time 29 time zones (48 cities + coordinated universal time), daylight saving on/off, Home city/World time city swapping Stopwatch 1/1000-second stopwatch Measuring capacity: 99:59&';59.999&';&'; Measuring modes: Elapsed time, lap time, split time Others: Speed (0 to 1998 units/hour), Distance input (0.0 to 99.9) Mach indicator (speed exceeding 1225 units/hour) Timer Countdown timer Measuring unit: 1 second Countdown range: 24 hours Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments) Other: Auto-repeat Alarm/hourly time signal 5 daily alarms (with 1 snooze alarm) Hourly time signal Light LED light Auto light switch, selectable illumination duration (1.5 seconds or 3 seconds), afterglow Light color LED:Amber Calendar Full auto-calendar (to year 2099) Accuracy Accuracy: 15 seconds per month Other features 12/24-hour format Regular timekeeping: Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (speed) Digital: Hour, minute, second, pm, month, date, day From G-SHOCK, the toughness watches that are ever evolving in an endless pursuit of strength, this combination model combines analog and digital displays. Equipped with a millisecond stopwatch and speedometer. Boasts JIS class-1 magnetic resistance and excellent practicality. The face design consists of four large LCD displays with large aluminum hour and minute hands that are lightweight and have excellent shock resistance. The analog and digital displays are laid out symmetrically, giving the face a dynamic design.