Thumb Disposable VapeHuang Jin2022-01-06T09:29:54+00:00 Project Description Thumb Disposable Vape Pen The world’s smallest vape pen: smaller than a thumb Bottom touch to preheat Buttonless ,air activate,just inhale to vape Battery Capacity: 280mah Tank Capacity: 1.0ml Large filling hole: super easy to fill oil both by machine and hand. Share This Story, Choose Your Platform! Thumb Size: 21mmX13.6mmX52mm,smaller than a thumb. It is invisible when using. Since it is small size, can fit in a pocket without knowing it is there. The Thumb is with micro USB charging port on the bottom. So when it is power off ,you can charge it in time, your oil will never be wasted.