The SportDOG Brand TEK Series 1.5 GPS Tracking System upgrades our original tracking systems Handheld Device making it compatible with the TEK Series 2.0 Collar Receiver that features a more compact design and even better tracking reliability. By using our HopTek technology. the Collar Receiver reports the location. direction. and status of up to 12 dogs in a 7-mile range. all viewable on the Handheld Devices LCD screen. Whether youre running hounds. beagles. or bird dogs. the TEK-V1.5L allows you to track with confidence.