This product has a very small transmitter, use this on your cell phone or any other articles needed to be protected, you may find that they are very safe and non-forgettable and non-losable.

• 电子防丢器全能遥感；距离可调；分接收器和发射器；另配备挂扣.；在微型机发射器超出监控范围一段距离；接收器即时闪光和急促警报声