Electric heating wire will turn red to ignite and automatically extinguished after 10 seconds; With a charging cable, can charged via the computer; Battery capacity: 350mAh; Output voltage: 5V; Charging time: 1~2 hours, and available for 1 weeks; Lifespan: 1 year; Notice: If the electric wire with soot, please reverse or blow, don't clean with a hard object, so as to avoid the electric wire fracture.