The Astro system includes a bright color-screen handheld GPS device and a wireless transmitter, called the DC 20. To get started, just take Astro outdoors and turn on the handheld and transmitter to acquire GPS satellite signals. Then attach the DC 20 to your dog, either with the included dog harness or by threading it onto a 1-inch e-collar. Now youre ready to turn him loose no other setup required.

Astro shines when you're out on the hunt, but it also excels in getting you back to your truck at the end of the day, or even back home again. In fact, the Astro handheld has all the features of Garmin's top-line handheld outdoor devices, including a barometric altimeter, electronic compass, microSD card slot, celestial information, area calculator and rugged, IPX7 waterproof exterior.

Product Name	Astro 220 (for Multiple users)
Battery Life	20 Hour - Using 2 AA batteries
Product Type	Handheld Navigator
Display Screen	2.60" Active Matrix TFT Color LCD
Interfaces/Ports	1 x mini-USB 1 x Antenna
Product Model	220
Product Line	Astro
Memory Card Support	microSD Card
Built-in Devices	Compass
Software Included	Trip & Waypoint Manager
Platform Support	PC
Display Resolution	240 x 160
Additional Information	Routes: 50 Waypoints: 1000 Track points: 10000 Basemap: Autorouting Over 6 million points of interest Software: MapSource mapping detail such as US TOPO, Inland Lakes, BlueChart and City Navigator

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