No matter what kind of dogs you run or how you hunt, Alpha T 20 is the slim, rugged and universally sized collar designed to help you build a better dog no matter the breed. Product Features TRACK YOUR DOG UP TO 9 MILES WITH A COMPATIBLE HANDHELD (SOLD SEPARATELY) OPTIMIZE YOUR BATTERY LIFE WITH DYNAMIC TRACKING COLLAR IS UNIVERSALLY SIZED TO FIT LARGE AND SMALL BREEDS EASILY CHANGE THE USER-REPLACEABLE FLEX BAND UTILIZES MULTICOLOR LOCATION BEACON FOR LOW-LIGHT CONDITIONS GET AUTOMATIC SOFTWARE UPDATES WHEN CHARGING AND CONNECTED TO YOUR NETWORK Product Specifications Unit dimensions (WxHxD): 3.2" x 1.8 x 1.4 (8.1 x 4.5 x 3.5 cm) Weight: 6.75 oz (191.5 g) for transmitter and antenna (without collar) 9.3 oz (262.7 g) total weight (with collar) Battery type: rechargeable lithium-ion pack; user-replaceable Battery life: Standard battery pack (included) up to 68 hours using dynamic tracking (default) Range: 9 miles Interface: USB-C Water rating: 1 ATM (10 meters) Neck size: with standard 1 collar strap: minimum of 9.5 (24 cm) in circumference with flipped 1 collar strap: minimum of 6.5 (16.5 cm) in circumference High-sensitivity GPS/Galileo receiver: yes GPS: antenna top-mounted, black Stimulation/vibration/tone: yes LED beacon lights: yes (multiple color options) Flex band: user-replaceable Sleep mode: yes (Alpha Series only) Rescue mode: yes Frequency mode: MURS Replaceable collar straps: yes Collar compatibility: up to 1" (2.54 cm) Automatic software updates: Wi-Fi technology (when charging and connected to a network)