CCELL glass cartridge 105mm electronic pen 4.3V ego twist batteries

Variable voltage preheating batteries are the IDEAL battery when using THICK extracts, or if you just want to get a better pull than the old buttonless version. Preheating function warms the thick oil before use, just tap the button twice for a 20 second preheat. Battery capacity of 320mah. 

Switch the bottom dial to change the voltage from 3.3/3.8/4.3/4.8V

SAME DIAMETER WITH CCELL OIL CARTRIDGE:   105mm (D) * 99mm (L)