1,Battery capacity: 380mah 2,Thread: 510 thread 3,Dia: 11.2mm length:82mm 4,Charge voltage: 4.2V 5,Protection: short circuit / overcharge/overtime 6,Button led light indication: 2.7V-White,3.1V-Blue,3.6V-Red 7,Wattage: 7W-10W,Special for thick tank 8,Preheating time: 15s 1) 5 clicks on/off 2) 3 clicks to adjust voltage 3) 2 clicks to preheat