... tube, much stronger than the stainless steel.The atomizer for it is made of copper, too, which ... , Charming Red, Hot Orange, and Mysterious Purple. 3. Powerful Function 1) Soft button design Different from the ... Low voltage alarmIn case of lower voltage than 3.3V, the atomizer stops work, and the LED light twinkle ... When one puff is over 10 seconds, the atomizer stops work, and the LED light twinkles 10 ...