The arc 4 e-cig kit features a class leading 2600mAh internal battery, up to 40W of power output and the ability to power sub-ohm atomizers. Stainless steel threads and a spring loaded firing pin offer longevity of use, and as with the earlier arc (Curve) products, the arc 4 e-cig kit comes supplied with the CS Air tank and a 10ml bottle of UK produced Red Label e-liquid.