The Yocan UNI Pro is also VV mod, which newly updated version of the extremely popular Yocan UNI. (Related Post: Yocan UNI vs UNI Pro)It is a powerful and feature-rich device.
650mAh built-in battery
Adjust the voltage between 2.0V and 4.2V
Learn more Yocan UNI Pro information, please visit Yocan official site Yocan.com