... C, eGo-W, etc. 3. Working with tank cartridge, good for refilling . 4. Suitable for 650mAh battery, 900mAh battery, 1100mAh battery. 5. Detachable ... and Changeable. Easy for cleaning. If defective, only need to change head.Colors: We ... have many colors for your option. Black, White, Chrome, Stainless etc. We can ...