GF21 Mini GPS Real Time Car Tracker Anti-Lost Device Voice.

Small size and light weight, suitable for hidden and carry. Black shell, easy to hide, perfect for tracking vehicles, teens, spouses, elderly persons or wallet. 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 tracker, with no light and no noise, you can be monitoring and spy what's going on around the tracker silently and secretly.