We are a manufacturer devoted to premium cigarette accessories. This USB lighter is powered by a rechargeable eco-friendly lithium battery. The battery can be charged hundreds of times. The product has advantages of windproof, safety, environmental protection, energy conservation, etc. The USB interface is only used for charging. Material: Aluminium Alloy +ABS Size: 3.4*0.4*0.4in Weight: 0.48oz Package include:1x Wireless USB Cigarette Lighter Charging Method: The indicator light is blue when charging, and the blue light is off after fully charged, then please disconnect the power immediately (usually fully charging time is 20-30 mintes). Note: The lighter recharged MUST through Micro-USB2.0 interface,the voltage rating need to be DC（5±0.5)V or the lighter circuit boards is burnt out,the lighter will be broken. For the safety, the lighter is designed to automatically flameout after 10 seconds when you push out the lighter, and if you wanna reuse to lit cigarette, please push-back the button and push it out again. The Lighter is an electronic product, although it has been fully charged before we shipment, but the transport time longer, we can not guarantee that still full charge when you received !!!!! Please Please check the lighter when you received it,if the lighter have no elecrice ,the lighter did not work,the LED will flash that means you need to charge the lighter,after full charge(about 20-30 minutes),the lighter will work. Please don't worry,although we are a small seller, but we will take every order seriously, There is warranty on the purchase,(even if it passed the amazon standard 30 day return period), without reason, 100% satisfaction guaranteed,if you have any questions, please contact us, we are online 24 hours.