Description Description Small size and light weight, easy for carry. Black shell, easy to hide, perfect for tracking vehicles, teens, spouses, elderly persons or assets. All you need is a working SIM card (NOT included) to insert into the device, then you can track and map (with Google Maps) in real-time over the Internet. Dial SIM card number, then you can hear voice around this tracker, with no light and no noise, you can monitoring and spy what’s going on around tracker silently and secretly.   Key Items: Item type: Mini tracker Working Time: 4-6 days Battery: 3.7V 400mA li-ion battery Charging Input: AC 110-220V 50/60HZ Standby Current: About 2.5mA Charging Output: DC 5V 500mA Standby Time: 12 days GPS positioning accuracy: about 100m Antenna Type: GSM/GPRS Material: ABS Communication Frequency: 850/900/1800/1900Mhz Working Voltage: DC 3.4-4.2V Speaking Current: About 150mA Size: 35*20*14mm   Package Include: 1 x Mini tracker 1 x USB cable 1 x User manual     Note: The colors deviation might differ due to different monitor settings. We provide you with the best product and service, if you have any problem, please let us know, and we will solve the problem ASAP. Thank you so much.