The Sport Dog Tek Series 1.5 GPS Tracking System has an 11 km range using HopTek technology. It tracks up to 12 Collar Receivers and features GPS tracking with tilt-compensated compass. The Collar features 99 levels of continuous, momentary, and rising stimulation levels with vibration and tone options. Collar Receiver is DryTek waterproof and submersible to 7.6 m.