Check out the video below to see how it works 1. When the system starts working the LED light turns on 2. If the watch is operated for more than 15 seconds the system will stop the power transmission to the heating coil automatically and the LED light starts to flash. This is a built in safety mechanism to prevent damage to the coil by over heating so do not be alarmed. 3. The LED light will flash successively in case of low battery. 4. When charging the LED light will turn on and it will glow brightly 5. This product can charge through any USB interface High quality, Innovative and Environmental friendly Electronic Cigarette Lighter. This lighter is powered by a rechargeable Li-ion battery. No Gas/Fuel Is Required. Battery can be charged and discharged hundreds of times. Works under any weather condition. A USB Charging Cable Is Included. Excellent Gift Item or Personal Collection.