Features:
You can put on the alarm in anything you want, such as mobile telephone, pet, or kids,but not in the plane.
Delicate and mignon design makes it convenient to bring and many sorts applicative
Keep off the water, no damage to the human health
Completely wireless operation - no wires or cables required
Wireless easy mounting design never affects your things and pets, and makes them security
Quick and loud response, make sure the safty
Wireless system, 25m remote control distance
Transmitter size: 33.4mm x 28.6mm x 11.8mm
Battery: CR2032 X 1(included)
Receiver size: 46mm x 38mm x 15.5 mm
Battery: CR2032 X 1 (included)

Package included:
1 x Transmitter
1 x Receiver
2 x battery