Features A very Powerful and upgraded 1600 mAh battery Upgraded & more stable PCB control head Much more comfortable and very ergonomic spin dial for adjusting your volts Much Longer life spans for the new upgraded PCB and battery cells Dimensions: (length)124.5 * 16.5(Diameter) mm (width):61.8g Operating Volts (output): 3.3 to 4.8V Charging voltages(inputs): 4.2V / 420mA Compatibility All 510 threaded accessories The Spinner 2 has a lot of improvements from its prior generation. Weve combined all the best features & advantages of the first Gen but also created a Entirely new & unique Vision Spinner 2 battery. - Featuring a New upgraded and more stable PCB control head - A beautiful ergonomic spin dial for adjusting voltage - A Brand new and upgraded battery cell of 1600mah, that makes the Spinner II much more powerful! - A longer life span for the new upgraded PCB and battery cell also we took many suggestions from our Loyal customers that insisted we not only supply singl