CRUISE SHIP ESSENTIALS: Our cruise-approved power cube is non-surge, with no extension cord, fully compliant with all major cruise lines and ships through 2027. (NOTE: NOT allowed on ROYAL CARIBBEAN cruise ships) TRAVEL SIZE: The smallest cruise power strip on the market, perfect for saving essential packing space. It includes a USB outlet plug for added convenience. COMPATIBLE: made specifically to suit Carnival, Celebrity, Princess, Norwegian, Holland America, MSC, Virgin Voyages & other major cruise lines. (NOT allowed on Royal Caribbean and some Disney cruise ships) 6 PLUG UPGRADE: 3 standard AC Outlets & 3 USB-A ports for iPhone, iPad, Android, Samsung, etc devices. GUARANTEED: cruise essentials made and guaranteed by our small, US, cruise-loving company