Feature: Small size and light weight, easy for carry. Easy to hide, perfect for tracking vehicles, teens, spouses, elderly persons or assets. With two powerful magnets inside, easy to attach to vehicle firmly, no extra installation need. 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 locator, with no light and no noise, you can monitoring what's going on around the locator silently and secretly. 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. Application: Handheld and vehicle purpose. Used widely for a vehicle, person and other moving objects tracking. The GPRS function and the caller ID display function should be subscribed for the SIM card.The GPRS function and the caller ID display function should be subscribed for the SIM card.Install the APP client onto your cell phone. Specification: Size: about 40*23*17mm Material: ABS Antenna type: GSM Communication Frequency: 850/900/1800/1900Mhz Charging Input: AC 110-220V 50/60HZ Charging Output: DC 5V 500mA GPS positioning accuracy: 5-7 days Battery: 3.7V 300mA battery Battery working time: about 100h Package List: 1 x Mini Tracking Locator 1 x USB Cable