75DB KF1 Remote Electronic Key finder with 25-40meters Working
WT:15.5g (battery included)
Battery:Lithium CR2016 2pcs
Keychain size: 4.5X2.8X1.1CM
Battery last: 12 months
Put the card in the wallet, and the keychain tie with the keys,
when you can't find the keys, just push a button on the card, and
the keychain will sound alarm within 1 second.
The alarm will last for 5 seconds, and then stop.
Working distance: 25-40meters.