Store up to 16 POI, Ultra portable GPS, World's smallest personal GPS guider Altitude + longitude display Record travel speed and time, Perfect for hiking, camping, jogging, mountain climbing, etc Never get lost again! Quick reacquisition of satellites, GPS receiver + location finder (a.k.a. PG03 Mini GPS) Main Function: GPS Receiver + Location Finder Maximum GPS Update Rate: 10 Hz Display: H:128 x W:64 Dot Matrix Display Screen Flash Memory: 512K On-Board Buttons: 3 Buttons (ON/OFF, Navigate Left/right) To select a mode, navigate to mode and press the ON/OFF button Accuracy: Position: Up to 10 meters Velocity: 0.1m/second Time to Start: Hot Start: 5 Seconds approx. Warm Start: 40 Seconds approx. Cold Start: 2 Minutes approx. Sensitivity: Tracking: 161 dBm Re-Acquisition: 157 dBm Acquisition: 148dBm Protocol: NMEA-0183 v3.01 Setting: Backlight, Clock, Time Zone, Measure Unit, Clear POI, Cold Start, Reset Default Power Source: Built-in rechargeable battery (3.7v, 390 mAh lithium battery) Charge: Via USB, 5V Operating Time: 10 hours, Aprrox. Operating Temperature: -20 to + 55 Degrees Celsius Colour: dark green Material: ABS Size: 65 x 63 x 17mm Package Contents: 2 x tracker 2 x USB cable Kindly noted that use it in opean areas without obstacle, it takes a whiletime to get the satellite signal.