Integrated with an internal battery and a tank, the OSUB One makes the all in one setup too easy. Featuring a max 50 watt output, ergonomic design and a crystal clear OLED display, top fill system and an intuitive leak proof design, convenience and function is the OSUB's ultimate goal. The 2200mAh battery and tank have been stealthily encased within the device to make sure you're ready with power and tank at all times. The wide power and temperature range gives users the ability to completely customize their vaping experience to tune in that spot to hit the mark on every puff. Featuring a very streamlined shape, the OSUB also features a lateral fire button that is in the perfect position to be pressed and fired on demand.