Features 1、Build in 2 pcs strong magnet,you can put it on the metal plate and absorb automatically. 2、The GPRS locator is compact, lightweight and portable, making it easy for users to carry around and providing a more flexible use experience. 3、The locator is suitable for a variety of scenarios, including vehicle monitoring, child safety, etc., to meet the diverse positioning needs of users. 4、The GPRS locator has a standby time of up to 12 days and an operating time of 4 to 6 days, which ensures that it can provide a stable positioning service in case of prolonged use. 5、Made of premium materials with good wear proof to ensure stable operation in different environments. Specifications: Size: 3.5cm*2.0cm*1.4cm (L*W*H) Charging input InputAC110-220V50/60Hz Charging output: OutputDC5.0V 300-500mA Battery: 3.7V 400mAh Li-ion battery Standby time: 12 days Working time: 4-6 days Expansion card: mini TF card Continuous call: 150-180 minutes Network standard: GSM/GPRS Storage temperature: -40°C to +85°C Operating temperature -20 ° Cto +55 ° C Humidity range 5%--95% non-condensing GPRS: Upload60, TCP/IP Working voltage: 3.4-4.2V DC Standby current: ≈2.5mA Turn on the voice control current: ≈30mA Call current: ≈150mA GSM positioning time: 25 seconds Frequency band: GSM850/900/1800/1900MHZ Package List 1 x Mini tracker 1 x USB cable 1 x User manual