Main features: Waterproof IP67, GPS and Beidou positioning, with accuracy of 5m outdoors, WIFI positioning, with accuracy of 30m indoors. Web platform or Phone App or SMS for positions check, Solar charging automatically when sunlight exists, Removal alarm, Vibration alarm SOS button for urgent help, Loud siren for help or Ring to find the device, Historical route display or Geo-fence Low battery or SIM card changing alarm, High power LED prompt light, Step counting Specification: Frequency bands: 4G FDD:Band 1 or 2 or 3 or 5 or 7 or 8 or 20 or 28 GPS locating time:30sec with cold boot (open ) 29sec with warm boot (open ) 5sec with hot boot (open ) GPS positioning accuracy:5-15m (open ) WIFI positioning accuracy:15-100m(Under WIFI range) Working temperature:-20 - and70 Working humidity:5 percent - 95 percent RH Battery capacity: 4000mAh Material: Plastic colour: black Package Contents: 1 x Solar GPS Tracker Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm. sku:219670357462