O Pen variable voltage Battery & Charger

New in box, black or silver, O Pen Touch featuring adjustable Voltage & Preheat Functions! Charger included, Sleek $ discreet, Standard 510 thread fits your fave cartridges!Variable voltage options from 280 mah to 350mah, higher heat for thicker oils *5 clicks of button- on/off *2 clicks : Preheat cycle runs ~1.2v for 15 seconds for thicker oil, LED rchanges colors., atop early 1 click^^3 clicks cycles: Green - 3.6V Blue - 3.8V Red - 4.0V Hold button for 8 sec timer prevents overheating