The Vision Ego Spinner is a variable voltage twist type battery, similar to the Ego Twists you see today. With a knurled twist knob makes this effortless to turn and adjust.The red line markings makes this an easier visibility to know what voltage range you're set at. A white LED button is lit when activated and has a safety 5-click feature which will turn on/off. The battery is compatible with all 510 threaded accessories and can be charged using an ego series type USB charger. The Rainbow is available in 1300, 900 and 650 mAh.
Note: It is suggested to use an output rating 420mA USB Charger. Includes 1 battery.