Description The Garmin Alpha TT25 Collar is a slim, lightweight tracking and training collar designed for hunters who demand reliable performance without added bulk. Engineered to pair seamlessly with Garmin Alpha handhelds, the TT25 delivers precise GPS tracking and dependable training functionality in a compact, low-profile design that&';s comfortable for dogs of all sizes. Improved antenna placement enhances signal strength, while the rugged, waterproof construction ensures consistent performance in harsh terrain and extreme weather. With long battery life and fast update rates, the Alpha TT25 keeps you confidently connected to your dog during every hunt. Specs Dimensions 3.2" x 1.8" x 1.4" Weight Transmitter and Antenna (without collar) - 6.75 ozTotal (with collar) - 9.26 oz Water Rating 1 ATM (10 meters) Battery Type Rechargeable lithium-ion pack; user-replaceable Battery Life - Up to 68 hours using dynamic update rate (default mode)- Up to 25 hours with 2.5 second update rate- Up to 84 hours with 2 minute update rateExtended battery pack (sold seperately) Tracking/Training Range Up to 9 miles Compatible Devices Alpha LTE, Alpha 300, Alpha 300i, Alpha 200i, Alpha 10, Pro 550 Plus, Alpha 100 Manufacturer Warranty Limited lifetime against manufacturer defects