O2PUR Stainless 900mAh variable voltage adjustable battery up to 4.8 volts, last 3x as long as standard vape pen batteries. You can adjust the strength and amount of vapor with a simple twist of the power dial! Vape the way you like it any time you like! This battery works with the O2Pur standard and variable tank!
Dimensions - 4.5" length, 9/16" diameter.