Presenting, the Yocan Flat Series Dab Pen Battery. This compact vaporizer battery was designed with the on-the-go vaper in mind. It has all the things Yocan’s customers loved from its previous product and a new feature that’s so simple, yet so effective. 350mAh to 900mAh Battery Capacity USB Type-C Charging Technology Variable Voltage Setting Pre-heat Setting 15-second Safety Cut Off New Square-shaped Design 510-threaded Connection