key finder with match&find function 1.Trial order 500sets 2.Portable,Receiver&Transmitter ... ROHS 4.HOT/NEW/Novelty finder key finder with match&find functionABS plastic material key finder with keychain and cardVery thin ... the card,keychain will stop beep after matching.Find: When you want to find the lost keys,just push the button" ... .5g(battery 2pcs CR2016 included) key finder with match&find function