Innokin CoolFire Mini: Tiny form factor device 6W - 40W adjustable power Internal 1300 mAh battery (USB charging) Easy to use menu system Zenith D22 Tank: 22mm diameter Twist to fill top cap (no parts to remove to fill) Mess-free head swapping Anti-gurgling system (Juice flow is cut off when the top cap is open to fill) 510 connection for cross compatibility Package Contents: 1 x CoolFire Mini device 1 x Zenith 22mm tank 1 x Plexus 0.5? z-head (installed) 1 x 1.6? head (spare) 1 x spare drip tip 1 x spare o-rings pack 1 x USB charging cable 1 x User guide including quick setup guide Innokin CoolFire Mini Zenith Kit - The CoolFire Mini device features an internal 1300mAh battery, is super-easy to use and has a wattage range of 6W to 40W. The kit is supplied with the 22mm version of the Zenith tank. This tank is quickly becoming the most popular MTL replaceable coil tank due to its excellent performance and ease of use. The tank is supplied with the Plexus Z-coil head which is a new design in heating elements as well as the ever-popular 1.6? Zenith head. The heads can be swapped out with little to no mess.