This is ideal for protecting child in public places such as park, garden, shipping mail and walking, and so on. Devicxe consist of transmitter and receiver and sound alarm and vibrate if transmistter is out of set distance.

Transmiter:
Lenght 33.4x width 28.6x thickness 11.8
Weight: 5g (Not including battery)

Reciver:
Length 46x width 38x thickness 15.5
Weight: 16g (not including battery)

Baterry service live:
Reciver: eight hours per day, about 25 days
Transmitter: eight hours per day, about 20 days