Physical Dimensions: 6.77 x 17.40 x 4.23 cm Display Size: 3.8 x 6.3 cm; 3" diag (7.6 cm) Display Resolution: 240 x 400 pixels Display Type: Transflective 65K colour TFT Weight: 282g with batteries Battery Type: 2 AA batteries (not included); NiMH or Lithium recommended Battery Life: Up to 19 hours Water Rating: IPX7 MIL-STD-810: Yes (thermal shock water); bare unit only Interface: High speed microUSB and NMEA 0183 compatible Memory/History: 8 GB Cast Off Confidently Stay on course and track more adventures with the GPSMAP 79s rugged floating handheld. It?s water-resistant it floats and it?s fogproof so it belongs on the water This thing can remember up to 10 000 waypoints and more. It?s nice to have reliable positioning when out on the water. The built-in compass will point in the right direction. Get the best of Garmin and Navionics data with optional BlueChart g3 charts. Stay out longer with up to 19 hours of battery life in GPS mode. Built for life on the boat. Rugged Handheld: This handheld is water-resistant IPX7 with a high-resolution colour display that can be read in the sun. The glass is even scratch-resistant and fogproof. Designed to Float: If rough waters come and the handheld goes overboard don?t worry. This device floats. Battery Life: User-replaceable AA batteries (not included) provide up to 19 hours of battery life in GPS tracking mode. Exactly what is needed to navigate. Accurate Tracking: With support for multiple satellite constellations ? such as GPS GLONASS Beidou Galileo QZSS and SBAS ? Get accurate reliable tracking and positioning around the world. Increased Memory: More memory than previous models Save and track 10 000 waypoints 250 routes and 300 fitness activity files. Built-In Compass: The 3-axis tilt-compensated electronic compass shows the heading ? even while the boat is standing still. html-body [data-pb-style="639072567DAEC"]{justify-content: flex-start; display: flex; flex-direction: column; background-position: left top; background-size: cover; background-repeat: no-repeat; background-attachment: scroll; border-style: none; border-width: 1px; border-radius: 0px; margin: 0px 0px 10px; padding: 10px;} html-body [data-pb-style="639072567DAF6"]{border-style: none; border-width: 1px; border-radius: 0px; margin: 0px; padding: 0px;} html-body [data-pb-style="639072567DAFC"]{text-align: center; margin: 0px;} html-body [data-pb-style="639072567DB02"]{border-style: none; border-width: 1px; border-radius: 0px; padding: 0px;}