GARMIN Astro 320 GPS + 3 x DC 40 Dog Tracking Collars Bundle

Physical & Performance: Unit dimensions, WxHxD: 2.4" x 6.3" x 1.4" (6.1 x 16.0 x 3.6 cm) Display size, WxH: 1.6" x 2.2" (4.1 x 5.6 cm); 2.6" diag (6.6 cm) Display resolution, WxH: 160 x 240 pixels Display type: transflective, 65-K color TFT Weight: 9.2 oz (260.1 g) with batteries Battery: 2 AA batteries (not included); NiMH or Lithium recommended Battery life: up to 20 hours Waterproof: yes (IPX7) Floats: no High-sensitivity receiver: yes Interface: USB Maps & Memory: Basemap: yes 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: Automatic routing (turn by turn routing on roads): yes (with optional mapping for detailed roads) Electronic compass: yes (tilt-compensated, 3-axis) Touchscreen: no Barometric altimeter: yes Camera: no Geocaching-friendly: yes (paperless) Custom maps compatible: yes Photo navigation (navigate to geotagged photos): yes Outdoor GPS games: no 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 Additional: Range: DC-40: 9 miles (line of sight)Frequency band: MURSVibration mode: yesTracks up to 10 dogs simultaneously