The Garmin T9 collar Dog Tracking system operates on the 900 MHz FHSS signal. The collar features additional satellites known as GLONASS (Russian GPS satellites); top mounted GPS; sasy tool-less strap replacement and is water resistant up to 10 meters. Includes rechargeable lithium-ion battery, 1" blue collar strap, 14.2" antenna, AC adapter, vehicle power cable and charging cable.