TREBLE SAFETY DESIGN - Our lighter had passed CE, RoHS, UL test. Adopt the updated version of bonnet, which gives you treble protection, you have to push the safety lock switch first, then press the ignition switch to work. For the safety of consumer, the igniting spark will auto stop beyond 7 seconds per igniting. Restart the switch, the igniting spark will be re-ignited. PORTABLE & CONVENIENT Wind & Splash Proof Design prevents the electric pulse produced from being blown out by strong wind, The lightweight design makes the lighter easy to carry and ideal for camping, BBQ ,hiking ,indoor and outdoor activitiess. BATTERY NOTIFICATIONThis is the upgraded arc lighter which can display real time battery volume. When 4 LED lights on the barrel turn on, it is full charged. BUTANE FREENo more harmful butane. uses plasma tech to eliminate the need for this harmful chemical.During the ignition, there will be noise of zee,zee, which is high-voltage power generation, please use with relax.