Garmin High Sensitivity GPS and GLONASS Receiver with Quad Helix Antenna is a premium device equipped with a GPS and GLONASS receiver and a quad-helix antenna. GLONASS Receiver with Quad Helix Antenna has a clear and compact screen that is easy to read even in the sunlight. To transfer the data quickly at high speed, the High Sensitivity GPS also has an inbuilt Bluetooth that can transfer data to iPhone and Android devices. Product Specifications- Base map- Yes Battery- 2 AA batteries Battery life- 16 hours Brand- Garmin Built-in Memory- 8 GB Camera- 8 Megapixel with Autofocus, Automatic Geotagging Display Resolutions- 160 x 240 pixels Display Size- 3.6x 5.5 cm Display Type- Transflective, 65 K colour TFT Interface- High-speed USB and NMEA 0183 Compatible Model- 64SC Site Survey Physical dimensions- 6.1x16.0x3.6 cm Routes- 200 Waypoints- 5000 Weight- 230 grams