Men Digital LANSIN USB Watch Lighter Golden Metal Frame (White Dial, Brown Band) Imported Environmentally friendly, without gas, but is USB rechargeable battery( watch power by button batterey) Environmentally friendly, without gas, but is USB rechargeable , The watch can charge through the USB interface by a charging cable When charging, the LED light will turn lit and it will become dark when the batteries are fully recharged Watch cigarette lighter is comfortable to wear, it is a ideal present for your friends