Hamilton Devices presents to you one of their most eye catching devices. If you enjoy using cartridges, and want to stay stealthy, the Cloak is the device you need! Built with an internal 650mAh rechargeable battery, it's designed for long lasting usage! No buttons to worry about with the Cloak, once your cartridge is cradled in place, the auto-draw feature makes usage a breeze! The Cloak does not look like the typical 510 battery which is what makes it so unique! Operating voltage is between 3.2v-4.2v and will auto-adjust depending on battery charge level. Rechargeable via Micro USB, and can be used without anyone knowing what it is!

Cartridge Size Compatibility:
Fits most 510 threaded cartridges 0.5ml and 1.0ml
MAXIMUM compatible cartridge length is 2 1/4" (57mm)