Garmin Astro Combo Kit.GARMIN 010-00596-00 ASTRO(tm) DOG TRACKING SYSTEM COMBO UNITGPS RECEIVER:BAROMETRIC ALTIMETER AND BRAND NEW 3-AXIS ELECTRONIC COMPASSSCRATCH RESISTANT LENS ON THE 2.6″ COLOR TFT DISPLAY WITH BACKLIT DISPLAY & KEYPADRESOLUTION: 240 X 160 PIXELSWEIGHT: 6.4 OUNCES WITHOUT BATTERIESBATTERY LIFE: GREATER THAN 20 HOURS USING 2 AA BATTERIESUSB MINI-B CONNECTOR FOR DATA UPDATES WITH A PCRUGGED IPX7 WATERPROOF STANDARDSQUAD HELIX GPS ANTENNAREMOVABLE VHF ANTENNAMICRO SECURE DIGITAL CARD(tm) SLOT AVAILABLE FOR PREPROGRAMMED MAPSOURCE(R) MAPPING DETAIL SUCH AS US TOPO, INLAND LAKES, BLUECHART & CITY NAVIGATOR(R)STORES 1000 WAYPOINTS, 50 ROUTES & 10,000 TRACK POINTSAREA CALCULATION FEATUREBUILT-IN AUTO ROUTING BASEMAPINCLUDES: ASTRO 220, VHF ANTENNA, TRIP AND WAYPOINT MANAGER, USB CABLE, BELT CLIP, SWIVEL BUTTON, LANYARD, OWNER’S MANUAL & QUICK START GUIDEWIRELESS COLLAR TRANSMITTER:SHIPPED WITH RUGGED, DURABLE, NEOPRENE HARNESS TO MAINTAIN ITS POSITIO..