Features:MAIN FUNCTIONSStore up to 16 points of interest, can return to the starting point or guide destination, real-time latitude and longitude coordinates, travel distance time, travel speed and poster height, satellite time.POWER ON AND OFFIn the off state, press and hold the confirmation key for three seconds to turn on the machine and enter the boot screen, display the power-on icon: GPS (Global Positioning System), and then enter the main page, in any mode or page, press and hold the confirmation key for three seconds to shut down.APPLICABLE ENVIRONMENTTravel abroad, set the latitude and longitude coordinates of the destination, it can help you specify the direction, help you measure the straight-line distance, has the compass function, can help you measure the direction distance.USB RECHARGEABLEBuilt-in 3.7V 390mAh rechargeable battery, long standby time, enough to meet most needs, no need for frequent charging.PORTABLE SIZEThe size of the GPS navigation receiver is about 65 x 52 x 21mm/2.56 x 2.05 x 0.83inch, small and convenient, easy to carry, easy to operate, and long standby time.Specifications:Material: PVCColor: greenSize: about 65 x 52 x 21mm/2.56 x 2.05 x 0.83inch(length x width x thickness)Receiver: L1 type, C/A code, capture channel: 51, tracking channel: 14,Maximum update frequency: 10 Hz,Display image rate: 128*64Backlight color: blueMemory: 512KBKeys: 3 keysAccuracy: positioning, 10 meters (supporting differential correction system area 2 meters), speed, 0.1 meters per secondInitial positioning time: about 5 seconds for hot start, about 40 seconds for warm start, about 2 minutes for cold startSensitivity: -161dbm track, -157dbm recapture, -148dbm captureData protocol: NMA-0183 v3.01Power supply voltage: USB DC 5VBattery: built-in 3.7V 390mAh batteryOperating time: about 6 hoursPower Consumption: about 70mA for capture, about 30mA for continuous trackingAmbient temperature: working -20C~+55C, storage -30C~+55CAmbient humidity: up to 80% non-condensing humidityPackage Included:1 pc x GPS navigation receiver1 pc x buckle1 pc x usb cable1 pc x Chinese and English manualNote:1. Due to the light and screen difference, the item& 039;s color may be slightly different from the pictures.2. Please allow 0.5-2 cm differences due to manual measurement.