2.environmental usb rechargeable lighter,instead of traditional gas and fuel energy,more safe,healthy and convenient.

3.This product's USB interface is only used for charge,it hasn't the storage function.

4,This product's USB interface can be connected to your computer, mobile phone charges, and any other charger whose output voltage is less than DC5V ± 0.5V and output current is less than 3000MA.

5,one time charge will take you 3 hours,you'd better full fill the battery at the first 3 times.

6.Don't connect the fully charged battery to the power for a long time.