Smooth and sleek with various vibrant designs, the Obi Auto-Draw Battery fits into the palm of your hand! This easy to use oil cartridge vaporizer is auto-draw activated so there is no hassle with buttons or screens. This vape packs a 650mAh battery and can be used with 0.5mL or 1mL cartridges (sold separately). Utilizing a magnetic attachment, switching out carts is as easy as twisting on the magnetic adapter with 510 threading and dropping the cart into the battery chamber.