Features: Small shell, easy to hide,ideal for tracking vehicles,teenagers,spouses, seniors or assets regardless of the alarm locator on the car,children schoolbag, old man pocket, valuables bags, can be given to the alarm locator by mobile phone Send SMS commands for mobile phones; check the location of the alarm locator, facilitate your full monitoring, real-time mastery of the target 39 s internal two magnets,easy to attach/absorb to the vehicle,no additional installation required,compact size can be attached On the vehicle or on the belt, or into the backpack,the child is in danger, press the SOS button to ask for help, to avoid accidents, convenient. Explanation: Product Name: GPRS Positioner Colour: Black Material: ABS Weight: 50g Size: 35x20x14mm GPS positioning accuracy: 10m Alarm mode: SOS alarm, mobile alarm Battery type: lithium battery Antenna type: Built-in Battery:100/400mAh Operating voltage: 3.4-4.2V DC Charging input: InputAC110-220V50/60Hz Network format: GSM/GPRS GPRS: Upload60, TCP/IP GSM positioning time: 25 seconds Expansion Card: Mini TF Card Set all functions of security, tracking, monitoring, emergency alarm and management. Does not include SIM card and TF card. Please purchase it yourself. Note: Light shooting 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. package: 1xGPRS locator 1xUSB data cable 1x instructions Have a nice day The merchant warrants that their products comply with all applicable laws, and are offered only if they comply with Joom’s policies and EU Product Safety and Compliance laws.