Overview: 1.Small size and lightweight, easy to carry. Rechargeable, strong magnetic adsorption, recordable, anti-lost positioning for elderly children. 2.Black shell, perfect for tracking vehicles, teens, spouses, elderly persons or assets. With two powerful magnets inside, easy to attach to the vehicle firmly, no extra installation need. 3.All you need is a working SIM card (NOT included!) to insert into the device, then you can track and map in real-time over the Internet. 4.Dial SIM card number, then you can hear the voice around this tracker, with no light and no noise, you can monitoring and spy what's going on around the tracker silently and secretly. 5.Voice Recording Function: Send text message 555 to SIM card number, it will reply a message Snd and start recording, SIM card and TF card are not included. Specification: Color: black Material: Plastic Size:35*20*14mm GPS positioning accuracy: about 100m Expansion Card: Mini TF card Antenna Type: GSM/GPRS GSM Band: 850/900/1800/1900Mhz GMS Locating Time: 25 Seconds Power Input: AC 110-220V 50/60Hz Power Output: DC5V 300 - 500mA Battery Capacity: 3.7V 400mAh Li-ion Battery Working Voltage: 3.4 - 4.2V DC Storage Temp: -40 to 85 celsius Operation Temp: -20 to 55 celsius Humidity: 5%-95% non-condensing Standby Current: 2.5mA Speaking Current: 150mA Packing list: 1x mini magnetic GPS tracker (not including SIM card and TF card) 1x USB charging cable 1x English user manual