Size: 50x36x14mm Mateial: ABS plastic Batteries: 3 x AG3 button cell batteries (included) Key-finder function: It will flash with red LED and beep intermediately when you whistle An extra function:press the button, it can be used a torch with... - Update: 2009-09-22

Size: 40 x 40 x 10mm Material: ABS plastic Batteries: 2 x AG 13 button cell batteries (included) In heart shape design With key finding function: flash when you whistle and find your keys back With red LED light when beeping With recording func... - Update: 2009-09-22

Size: 30 x 30mm Material: ABS plastic Whistle when you misplace your keys, the keychain will flash and beep intermittently Different logos can be printed on it Works with 2 x AG 13 button batteries (included) - Update: 2009-09-22