Size:Length 13.5cm, Dia of head 3.5cm, Dia of bottom 2.5cm.
Built-in Battery : 3.6V/20mAH Rechargeable Ni-MH batteries
Coil of copper electromagnetic wire: 1,500 circles
Strong magnet: 12*12mm, 4000GS
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 4 minutes.
A torch is used for emergency lighting purpose.
Unit per color box package, 100pcs/carton.