Features: Environmental product,no radiation.RF wireless technology.1 transmitter matches 4 receivers.Super electronic key finder.Stable function, anti lost functionLong battery last time and working distance.The receiver is small and colorful, very easy to secure the keys or other things.The transmitter is designed as a remote control key, easy to carry and operate.

Specifications:Transmitter: 60 * 31 * 10cm, 14gReceiver: 52 * 32 * 14cm, 15gPackage size: 20.5 * 14.2cmPackage weight: 106g

Packing List:1 * Transmitter4 * Receiver

1 in 4 RF Wireless Super Electronic Key Finder Anti-Lost Alarm Keychain