For the ultimate in portability, use this Gemini GO booster cable alongside your Gemini GO machine (sold separately). Either plug Gemini GO into the mains or link up to an external power bank via this Gemini booster cable. For ease, this cable is screen-printed in the center to ensure that you know exactly which end needs to go in each port.Details:Includes screen printed instructions on productFor use with the Gemini GO (sold separately)Note: in order to use your Gemini GO machine with an external power source, the power bank you select must meet the following specifications: 12V, 1.5A, minimum 10,000mAh (not included).