Garmin Alpha 100 TT 15 Dog GPS Bundle High-Sensitivity GPS with GLONASS. Display size is 1.53 wide x 2.55 high in inches and 3 inch diagonal Preloaded TOPO U.S. 100k maps.LED beacon lights and Rescue mode as well as Stimulation levels-Tone and Vibration Battery life 20-40 hrs. Display type : transflective, 65-K color TFT touchscreen Setup virtual boundaries on your map and receive an alert, automatically sends signal to recall 1-inch black collar strap, 5-inches standard and 13-inches extended range antennas