Tired of searching for your hunting dog in tall grass or dense cover? The Astro 320 Receiver and DC 40 Transmitter track your dog's position and show you exactly where he is, even when he's totally out of sight. Bright 2.6" highly-reflective 65k color TFT display. Simplified user interface for increased ease-of-use. Longer antenna provides a reception range of up to 9 miles. Built-in 3-axis compass, barometer, and altimeter. Hot-Fix GPS support pinpoints your location. Wireless unit-to-unit transfer (ANT). TOPO 24K and BirdsEye mapping. Built-in Worldwide DEM basemap. Durable metal spine and overmolded antenna rubber boot. Internal 1.7 GB of memory (expandable via MicroSD card). USB and serial bus interfaces. Fully compatible with existing Garmin transmitters (DC20, DC30, DC40). Up to 7 mile range. Runs for up to 20 hours on 2 AA batteries (not included). Includes one DC 40 Transmitter.

The DC 40 Transmitter combines a high-sensitivity GPS receiver and a VHF antenna into a powerful all-in-one transmitter. Updates your dog's position every 5, 10, 30, or 120 seconds. The transmitter's bright orange polyurethane collar is highly visible, extremely durable, and easy to maintain. Waterproof to IPX7 standards. LED charging indicator shows current battery charge. Versatile design makes it easy to mount an e-collar receiver next to the transmitter to eliminate the need for two collars on your dog. Runs up to 48 hous on a user-replaceable, rechargeable lithium-ion battery. Transmitter and antenna weigh only 5.1 oz.