[Lithium-ion Battery]: Long standby time up to 90 days. Working time is 7-10 days. Depends on the working mode and location time interval you set. You don't need it every day. If the battery level is lower than 10%, it will send SMS notification to the main contact. Appearance size: 3.5cm*2.0cm*1.4cm (L*W*H) 2. Charging input InputAC110220V50/60Hz 3. Charging output: OutputDC5.0V 300-500mA 4. Machine battery: 3.7V 400mAh Li-ion battery 5. Standby time: 12 days. Working time 4-6 days 6. Expansion card; Mini TF Card[Track Route and Positioning History]: You can customize the time of positioning monitoring; the route history can last for 6 months; you can view the movement and route of the last 3 months on the app.[Electronic Fence Alarm]: (Electronic Fence Alarm) Set the geofence field; if your car exceeds the range you set, you can receive a message about the alarm.[Multi-type Alarm Function]: Travel alarm, shake, climb, low battery alarm, tracking the location of lost or stolen vehicles, motorcycles, cars and ships.