I-JOY SABER  is a single 20700 battery regulated tube mod! Its a very stylish mod and comes in a multiple of colours. It has very nice pentagonal fire button and adjustment buttons, with OLED display, that makes it very easy to operate. The I-Joy Saber has a massive 100w of power so if you like clouds this mod will perform brilliantly. The battery is removable and supports USB fast charging.
 
Equipped with a 20700 battery and 18650 battery can also be used through the battery adaptor!