The Innokin Go S Pen Kit is designed for flavour, convenience and affordability. The MTL tank is made with food grade PCTG plastic. This tank uses a 2ml pod tank that can be refilled multiple times but won't require any maintenance. The Go S Pen constant 13W battery output and 1500mAh battery creates great flavor’s and lasts all day. Charged with micro-USB, the Go-S features a tri-color battery capacity indicator and integrated safety protections.