Vape at your computer, no inline battery means you will be vaping at your usb output voltage! (typically 4.2v-5.0V dependant on your computer.) Save yor batteries. Just attach your 510 atomizer or cartomizer to this USB passthrough, plug it in to any USB port in your computer and Vape Away! There is a protection circuit, so no damage to your computer should occur. (Use at your own risk, I have never had a problem with these units)  This is the manual battery style version.

These have been measured to out put 5.1 Volts steady so you can enjoy that "Sweet Spot" ( you will need a power supply (i.e. usb powered hub or AC adaptor to get the full voltage) (most PC's usb ports will be fine but may not push a full 5 Volts, dependant on your system)

Cord has a built in gromit at the connection to prevent crimping of the attached cable!

Buit in Tension "Spring" inside cord, no more pulling it out of your usb port!

Cord measures 45 inches.