Features:brand new and high qualityMini shape, like a watch. Provide the address and distance to the destination.Destination point can be set, record the distance you have traveled and the for time you have spent.Provides information about the current position: longitude, latitude and altitude. Speed measurement.Displays the exact for time synchronized by satellite. With backlit display.for Ideal for drifting / Camping / hiking / climbing.Power consumption: capture about 70 mA, continuous tracking about 30 mA, Ambient temperature: working -20 degrees ~ +55 degrees, storage -30 degrees ~ +55 degrees. Environmental humidity: up to 80% non-condensing humidity Specifications:Receiver: L1 type, C/A code, capture channel: 51, tracking channel: 14Maximum update frequency: 10 HzDisplay for image rate: 128x64Backlight type: blueMemory: 512KBButtons: 3 buttonsAccuracy: positioning, 10 meters (supports 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 start,Sensitivity: -161dbm tracking, -157dbm recapture, -148dbm captureData protocol: NMA-0183 v3.01Power supply voltage: USB for DC 5V/3.7V390 mA built-in lithium batteryOperating time: about 6 hoursPower consumption: capture about 70 mA, continuous tracking about 30 mAAmbient temperature: working -20 degrees ~ +55 degrees, storage -30 degrees ~ +55 degreesEnvironmental humidity: up to 80% non-condensing humidity Note:1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.Thanks for your understandings. Package includes:1x GPS Positioning ( Does not include SIM card and SD card. )1x Cable USB1x Buckle1x User Manual