BB

The BB was made to be a smaller option for the Silver Bullet and is exactly that, using a smaller battery while maintaining the same design, form factor and clicky button (not recessed this time because for better space). When it first hit the market it was also available with a passthrough bottom, that replaced the battery compartment completely to allow vaping directly off a USB port.  The limitation of the USB output as well known is not enough to draw from so this option was removed until an affordable solution of a mains-to-usb adaptor is found.

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