The Astro 430 tracks up to 20 dogs at a time, with ranges up to 9 miles using a Garmin with T 5 collar device. 2.5-second update rate provides faster location tracking when dogs are on the run, while GPS/GLONASS reception enables better satellite tracking in challenging environments than GPS alone. Intuitive and easy to use, the Astro 430 handheld features a vibrant 2.6-inch color display, preloaded TOPO U.S. 100K mapping, an optional in-unit rechargeable battery and Hunt Metrics data to help analyze your dogs tracking habits in the field, so you can know how to train more effectively. The Astro 430 is tough, water-resistant, and long-lasting. This bundle includes: Astro 430 handheld, T 5 dog device with rechargeable lithium-ion battery, 1-inch orange collar strap, 5-inch standard and 13-inch extended range antennas, 18.5-inch standard and 22.5 range antenna, belt and charging clips, USB cable, AC adapter, and a vehicle charging adapter.