Airis 350mAh Button VV 510 Battery USB-C - BULK PACK OF 20X

Airis 350mAh Button VV 510 Battery USB-C - BULK PACK OF 20X 350mAh Battery variable voltage settings green=3.4V blue=3.7V red=4.2V USB-C Rechargeable Universal 510 thread Preheat functionality authentic Airis Product How to Use Click 5x times to turn off/on click 3x times to change voltages Click 2x times to preheat Press button to Activate, and inhale Power button will flash 10x times when battery is low. Red light will turn on when charging and off when fully charged. Package Includes: 1x Airis 350mAh Button VV 510 Battery 1x USB-C charging cable