Manufacturer DescriptionPremium GPS Handheld with BirdsEye Satellite Imagery Subscription and TOPO MapsLarge, 3” sunlight-readable color display for easy viewingMultiple Global Navigation Satellite Systems (GNSS) support to track your travels in more challenging environments than GPS alone plus three-axis compass and barometric altimeterAccess to BirdsEye Satellite Imagery with direct-to-device downloads and no annual subscription and preloaded TOPO U.S. and Canada mapsExpanded wireless connectivity supports Active Weather for up-to-date forecasts and animated weather radar and Geocaching Live for mobile syncing and updatesCompatible with Garmin Explore™ website and app to help you manage tracks, routes and waypoints and review statistics from the fieldUp to 16 hours of battery life in GPS mode; 1 week in expedition mode lets you explore longer than ever before on a single set of AA batteries Navigate your next outdoor adventure with the GPSMAP 66 series. Whether you’re hiking, hunting, climbing, geocaching, kayaking or mountain biking, you can explore more with this premium, rugged handheld with a 3” color display. It features access to BirdsEye Satellite Imagery subscription with direct-to-device downloads to help you find your way. And it offers multi-GNSS support as well as wireless connectivity for Active Weather, direct downloads and Garmin Explore compatibility.Get Your Bearings In addition to multi-GNSS support, the GPSMAP 66 series provides ABC (altimeter, barometer and compass) sensor capabilities to track your journey. The built-in altimeter provides elevation data to accurately monitor ascent and descent, while the barometer can be used to predict weather changes by showing short-term trends in air pressure. The three-axis electronic compass keeps your bearing whether you’re moving or not.See Where You’re Headed Get a better picture of your location with high-resolution photo-realistic views of your route, thanks to direct-to-device downloads of BirdsEye Satellite Imagery — without an annual subscription. You’ll see a true representation of your surroundings to find trails, trailheads and clearings for campsites, to pick stand locations for hunting, to find parks and parking for geocaching and even to create waypoints based on landmarks. Stay Tuned to Conditions You’ll always stay informed of weather conditions when you pair your GPSMAP 66 series device via Bluetooth® technology to a compatible smartphone. Receive Active Weather updates for real-time forecast information, including predictive maps for temperature, wind, precipitation and clouds. It also provides live weather radar so you’re aware of inclement weather that can affect your outdoor adventures.Find Your Cache GPSMAP 66s makes it easier than ever to enjoy your geocaching experience. Set it to automatically update with all the latest caches from Geocaching Live, including cache descriptions, logs and hints. With a Wi-Fi® connection or through Garmin Connect™ on a compatible smartphone, you’ll avoid manually entering coordinates or printing out cache details on paper — and each find will automatically upload to your Geocaching.com profile.Explore with Garmin Even when you’re offline and have no cell service, the GPSMAP 66 series pairs with the Garmin Explore mobile app to let you plan, review and sync data, including waypoints, routes and tracks. Plus, you can review completed activities while still in the field, even when you’re off the grid. Once you’re home again, plan for future trips and review previous activities from the Garmin Explore website.Utility in Adverse Environments Be prepared for the most extreme adventures. The GPSMAP 66 series offers up to 16 hours of battery life in GPS mode and 1 week in expedition mode (with 2 AA batteries). It provides an LED flashlight and SOS beacon that can be used to signal for help. It’s built to military standards for thermal, shock and water performance (MIL-STD-810G), and it’s even compatible with night vision goggles.FeaturesGeneralPhysical dimensions: 2.5" x 6.4" x 1.4" (6.2 x 16.3 x 3.5 cm)Weight: 8.1 oz (230 g) with batteriesWater rating: IPX7Battery: 2 AA batteries (not included); NiMH or Lithium recommendedDisplay type: transflective color TFTDisplay size: 1.5"W x 2.5"H (3.8 x 6.3 cm); 3" diag (7.6 cm)Display resolution: 240 x 400 pixelsMemory/History: 16 GBHigh-sensitivity receiver: YesInterface: high-speed USB and NMEA 0183 compatibleMaps & MemoryAbility to add maps: YesBasemap: YesStorage and Power Capacity: microSD™ card (not included)Waypoints/favorites/locations: 10000Routes: 250Track log: 20000 points, 250 saved gpx tracks, 300 saved fit activitiesPreloaded maps: basemap onlySensorBarometric altimeter: YesCompass: Yes (tilt-compensated 3-axis)Outdoor Recreation FeaturesArea calculation: YesAutomatic routing (turn by turn routing on roads): Yes (with optional mapping for detailed roads)Geocaching-friendly: Yes (Paperless)Custom maps compatible: YesHunt/fish calendar: YesSun and moon information: YesPicture viewer: YesGarmin Connect™Garmin Connect™ compatible (online community where you analyze, categorize and share data): YesAdditionalGarmin Explore compatible: YesGarmin Connect IQ compatible: YesWireless compatible: yes (Wi-Fi, Bluetooth and ANT+)Map segments: 15,000Active weather: YesSmart Notifications: YesLive Tracking: yes (with Garmin Connect™ Mobile)BirdsEye direct to device: yes (no annual subscription required)MIL STD 810G ruggedness for thermal, shock and water performanceSpecifications General1. Unit dimensions, WxHxD:2.5 x 6.4 x 1.4 inches (6.2 x 16.3 x 3.5 cm)2. Display size, WxH:1.5 in W x 2.5 in H, 3 in Diag3. Display resolution, WxH:240 x 400 pixels4. Display type:transflective color TFT5. Weight:8.1 oz (230 g) with batteries6. Battery:2 AA batteries (not included); NiMH or Lithium recommended7. Battery life:16 Hours Standard Mode, 1 week Expedition Mode8. Waterproof:Yes (IPX7)9. GPS-enabled:✔10. Preloaded maps:✔11. Map coverage area:USA + Canada12. Ability to add maps:✔13. Topographic Map Compatible:✔14. Built-in memory:16 GB15. Touchscreen:✘ Outdoor16. Area calculation:✔17. Geocaching-friendly✔