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 dog’s location from a vehicle Compatible with select Garmin wearables for quick tracking updates at the wrist