The Garmin Astro 430 is the new Australian Legal Garmin GPS and GLONASS tracking system to replace the Astro 320 unit which has never been officially released in the Australian Market. It can track up to 20 dogs at a range of up to 7km. With a 2.5 second update rate that is twice as fast as its predecessor. So, it is quicker to pinpoint the location when dogs are on the run. Intuitive and easy to use, the Astro 430 features a vibrant 2.6 inch display, preloaded TOPO lite Australia map and an optional in-unit rechargeable battery. Also includes Hunt Metrics dog performance data to help analyse your dog's tracking patterns and behaviours, so you can train more effectively.