The Vessel is a high-performance catridge battery that is perfect for those who like to use 510 threaded oil tanks and are looking for a stylish and functional battery. It features 240mah of power, a performance air intake design, 3-power settings (2.8V, 3.2V and 3.6V), and magnetic charging port. Fits most 510 thread cartridges and features a cartridge drop protection design. It also comes with a one year limited manufacturers warrarnty. Please not that the Vessel does not come with a 510 threaded tank.