Garmin Alpha10 Handheld. Pair it with the T 5 and TT 15 dog devices to track up to 20 dogs with additional dog devices sold separately up to 9 miles. Features of Garmin Alpha 10 Handheld Compact design with at-a-glance multi-GNSS tracking and configurable training Pair with the T 5 and TT 15 dog devices to track up to 20 dogs with additional dog devices sold separately up to 9 miles with up to a 2.5-second update rate Customize training for each dog with 18 levels of continuous and momentary stimulation plus tone and vibe Connect to a Garmin DriveTrack GPS navigator to view your dogs location from a vehicle Compatible with select Garmin wearables for quick tracking updates at the wrist Up to a full weeks worth of battery life (battery life may vary depending on usage) keeps you going on a multiday trip Follow the action by using Alpha 10 to track compatible Garmin dog devices and handhelds Sync with the Garmin Explore smart device app to view dog tracking data hunt replay and more Package Contents: Garmin Alpha 10 Handheld Alpha 10 handheld Spine mount with wrench kit Carabiner clip Belt clip Micro USB cable Documentation Garmin 010-02290-50: Alpha10 Handheld