Sunroad SR304 Multifunction Digital GPS Navigation Travel Tracker Compass  (Green)

Color: Green + Black Receiver, Type L1, C/A code, 51-channel acquisition, 14-channel tracking, Maximum Update Rate: 10Hz, Display, Pixel (H x W): 128 x 64 dot matrix, Backlight Type: Blue, Memory: 512KB, Key: 3 function keys, with 1 major button and 2 auxiliary ones, Position: 10m (2m WAAS corrected), Velocity: 0.1m/sec, First positioning time Hot-Start: 5 seconds average, Warm-Start: 40 seconds average, Cold-Start: 2 minutes average, Sensitivity, -161dBm tracking, -157dBm re-acquisition, -148dBm acquisition, Protocol: NMEA-0183 v3.01, Assistance: Message-based via NMEA serial port, Power: USB DC 5V and 3.7V 390MA lithium battery, Operation Time: Around 10 hours, Current Consumption Acquisition: ~70mA, Tracking: ~30mA, Temperature, Operation: -20°C ~ +75°C, Storage: -30°C ~ +85°C, Humidity Range: Up to 80% non-condensing, Features: Store and locate up to sixteen locations, Utilizes the latest digital technology High sensitivity SiRF Star III GPS reciever, Self calibrating digital compass, Weather resistant Built-in rechargeable battery, Compact size stores easily in your pocket or purse.