Battery life up to 80 hours - compared to the regular TT15 at 20-40 hours Compatible with the Alpha 100, Alpha 200, Alpha 200i, Alpha 10, and Astro 430 handhelds. Features: HUGE battery life! up to 80 hrs! Rescue mode Sleep mode (for extended battery life during long hunts) Rugged, water-resistant design that are tough enough to run wherever your dog runs High sensitivity GPS and GLONASS receivers track your dog up to 9 miles away LED beacon lights Offers 18 levels of continuous and momentary stimulation, plus audible tone and vibration modes. AND MORE!
GARMIN TT15X COLLAR