Feature: battery-free,rechargeable by shake.
Size:Length 18cm, Dia of head 4.5cm, Dia of bottom 3.5cm.
Built-in Battery : 3.6V/40mAH Rechargeable Ni-MH batteries
Coil of copper electromagnetic wire: 2,000 circles
Strong magnet: 13*15mm, 4200GS
Long life of bright LED, no need to change forever
Its switch system is based on magnetic induction technologies.
Shake the lights forward and backward while use. Shaking one minute and can make the light on 5 minutes.
A torch is used for emergency lighting purpose.
Unit per color box package, 40pcs/carton.