Find lost keys, just by a button
The receiver is very small and light, very easy to secure to the keys.
Size: 4.5 x 2.8 x 1.1cm
Battery: CR2032 x 1
Match: Turn up the keychain's switch to "ON" position, it will beep constantly("dee...dee..."),and push the button"press here" on the card, keychain will stop beep after matching.
Find: When you want to find the lost keys, just push the button"Press Here" on the card, and the keychain will sound alarm within 1 second, alarm will last for 4 seconds and then stop.