The JUSTFOG Compact 16 Kit is a high-quality vaping device with the compact design and attractive colors, consisting of the Q16 pro atomizer and Compact 16 Battery. Powered by 1400mAh built-in battery, the JUSTFOG Compact 16 provides an all-day-long vape to starters. The Compact 16 has a 3-level voltage adjustment from 3.4V to 4.2V, meeting your different vaping needs. With the feature of the accurate constant voltage circuit from the start till the end, it keeps the taste and vapor production of the device constant regardless of the residual power in it. Plus the eidetic LED color display of residual power is easy to check the battery life in 3 levels. The Q16 pro atomizer comes with 1.9ml capacity and OCC Bottom coil, to produce a dense and rich clouds. It adopting top fill design which allows you to fill it quickly and easily. Two 1.6ohm/1.2ohm 100% Japanese organic cotton coil is tender in taste and rich in vapor.