1.Built-in super-bright leds,no dry battery required
2.with 3.6v 40mAH battery
3.just crank 1 minute,it can continuous work 20 minutes
4.with palstic cover
2.with 3.6v 40mAH battery
3.just crank 1 minute,it can continuous work 20 minutes
4.with palstic cover