The Astro 320 handheld takes dog tracking to a higher level. It allows you to keep track of up to 10 dogs with multiple handsets and T 5 dog devices (sold separately). See Your Dogs’ Every Move: The T 5 has a top-mounted GPS antenna and is designed to keep its flexible, braided stainless steel radio antenna upright for best reception so you can track your dog’s position even in heavy tree cover or deep canyons. And it’s tough enough to run wherever you dog runs (water-rated to 10 meters). You can track up to 10 dogs at one time with Astro, at a range of up to 9 mi away, depending on terrain. The system transmits information by line-of-sight, so it reaches farthest in flat, open territory. As often as every 5 seconds, the T 5 dog device transmits your dog’s position to your Astro 320 handheld. Through the vibrant display, you can see your dog’s current location and a trail of where he’s been on the map page. Switch over to the Dog Tracker page to view a compass pointing to your dog’s location. When tracking multiple dogs with T 5 dog devices, you can also see each dog’s precise distance on the map page, and you can choose to auto zoom the map so all dogs can be seen on the display at any time. Dogs that are too far away to fit on the map’s current zoom scale can be notated on the display’s margin in the direction of the dog’s location. You can also choose the duration that each dog’s track log is viewed on the display, or toggle it off completely. Special Features for Your Peace of Mind: Rescue mode provides a reduced update rate when battery life drops below 25 percent in order to preserve battery life and give you more time to look for a lost dog. The improved battery life means when you set your update rate to every 5 seconds, the battery lasts 26 hours. In rescue mode, the battery lasts 54 hours. Plus, Collar Lock creates a 4-digit PIN number that helps prevent others from seeing your dog’s whereabouts — a useful feature in field trials to ensure an Astro is used only as a search tool when a dog in competition becomes lost. Upgrade with Ease: Getting what you need for the hunt is now a little easier. You can purchase the entire Astro bundle and as many T 5 dog devices with collars as you need. And your Astro 320 is compatible with every T 5 dog device. Additional Mapping: Astro 320 has a microSD card slot so you can load TOPO U.S. 24K maps for land elevation contours or City Navigator NT map data for turn-by-turn routing on roads. Astro 320 also supports BirdsEye Satellite Imagery (subscription required) so you can download satellite images to your device and integrate them with your maps. Mapping depicts important nearby geographical features and lets you know if your dog has crossed a creek or is nearing a dangerous road. Astro 320 is also compatible with Garmin Custom Maps, free software that transforms paper and electronic maps into downloadable maps for your device. Count Your Coveys: After you’ve captured your quarry, mark the exact spot with Astro’s Covey Counter, a special waypoint that tells you the exact location, time of day and elevation where you found your prey, as well as the number of birds you flushed and took from that location. Astro lets you save other special waypoints, such as “Truck” and “Lodge,” so you can save the location of these places quickly and easily for each hunt. Astro also offers special waypoint icons to represent food plots, tree stands and other hunting-related points. Plan Your Next Trip: Take charge of your next adventure with BaseCamp, software that lets you view and organize maps, waypoints, routes, and tracks. This free trip-planning software even allows you to create Garmin Adventures that you can share with friends, family or fellow explorers. BaseCamp displays topographic map data in 2-D or 3-D on your computer screen, including contour lines and elevation profiles. It also can transfer an unlimited amount of satellite images to your device when paired with a BirdsEye Satellite Imagery subscription. Turn Your Computer Into a BaseStation for Tracking Dogs: Load your laptop with BaseStation software to turn it into a field control center for tracking multiple dogs (T 5 dog devices). View real-time GPS information on the larger display of your computer, making it ideal for canine search and rescue teams. And because it’s GPS/GLONASS, you’ll get safe, secure and more effective tracking, even where Internet and cell phone service isn’t available. Physical and Performance: Physical dimensions: 2.4″ x 6.3″ x 1.4″. Display size: 1.43″ x 2.15″; 2.6″ diag. Display resolution: 160 x 240 pixels. Display type: transflective, 65-K color TFT. Weight: 9.2 oz with batteries. Battery: 2 AA batteries (not included); NiMH or Lithium recommended. Battery life: up to 20 hours. Water rating: IPX7. Floats: No. High-sensitivity receiver: Yes. Interface: USB. Maps and Memory: Basemap: Yes. Preloaded maps: no. Ability to add maps: Yes. Built-in memory: 1.7 GB. Accepts data cards: microSD card (not included). Waypoints/favorites/locations: 2000. Routes: 200. Track log: 10,000 points, 200 saved tracks. Features and Benefits: Touchscreen: No. Barometric altimeter: Yes. Camera: no. Geocaching-friendly: Yes (Paperless). Custom maps compatible: Yes. Photo navigation (navigate to geotagged photos): Yes. Hunt/fish calendar: Yes. Sun and moon information: Yes. Tide tables: Yes. Area calculation: Yes. Custom POIs (ability to add additional points of interest): Yes. Unit-to-unit transfer (shares data wirelessly with similar units): Yes. Picture viewer: No. Garmin Connect compatible (online community where you analyze, categorize and share data): Yes. Range: T 5: 9 miles (line of sight). Frequency band: MURS (The T 5 and TT 15 are only compatible with the Astro 320 and the Alpha 100. The T 5 and TT 15 can be configured for operation with either handheld but cannot be tracked simultaneously by both the Astro 320 and the Alpha 100). Vibration mode: yes. Tracks up to 10 dogs simultaneously Automatic routing (turn by turn routing on roads): Yes (with optional mapping for detailed roads) Electronic compass: Yes (tilt-compensated 3-axis) High-sensitivity Garmin GPS/GLONASS transmitter, enhanced map drawing capabilities, BirdsEye Satellite Imagery compatibility and a 3-axis electronic compass ensures you get to your truck or camp at the end of the hunt. It’s all easy to get to through a vibrant, sunlight-readable 2.6-inch color display.