2G WCDMA & 2G GSM : it can work with 2g and 2G network, more rapid, more stable. it can widely used for tracking the movement of a vehicle, truck, boat, car etc. You can ask the location of the device via SMS, App, the web platform, easy to use.GPS + LBS Dual Positioningreal-time tracking, automatic location information display (compatible with Android / iOS application, web / WAP), real-time tracking, positioning in GPS / A GPS / LBS mode , positioning accuracy up to 5 metersOther Common FunctionOver-speed Alarm Function. Vibration Alarm Function. Built-in vibration sensor, if your car vibrates, you will receive an SMS alert. Security Zones Function, set Security Zones and receive a notification as soon as the tracker Enters Or Leave This Area. It will keep your family staying a safe environment. Historical Route Functions. Displays the 90-day historical route.Easy to installStrong magnet, the device can be installed quickly and permanently. Just attach it to any iron surface with strong magnets.Long StandbyBuilt In 3.7V 5000mAh Li-ion battery, standby for 30 days when fully charged.The specific usage time depends on the frequency of use. Waterproof, dust proof, shockproof, small and lightweight.- Size: 90 x 72 x 22mm- Weight: 168g- Network: GSM / GPRS- GPS sensitivity: -159dBmM- GPS accuracy: 5m- Entrance: 5V-1A- Power: 110-220V- Battery: Rechargeable lithium battery 3.7V 5000mAh- Waiting time: 30 days This device just can work with 2G GSM network, and this item will not include Sim Card, please buy it from your local.