This is the tray with a rechargeable battery that attaches to carry-on luggage in seconds for charging and supporting a smartphone, tablet, or e-Reader. Ideal for use when waiting at an airport gate, it eliminates the need to choose between a seat nearest an outlet or a seat nearest the boarding area. The tray’s twin clamps attach to a bag’s telescoping handle, placing its removable battery between the handle’s uprights while allowing your device to sit upright for reading the news or watching a movie at any height you desire. The included micro-USB cable connects one of the battery’s two USB ports to any compatible device, providing up to 55 hours of talk time for a smartphone and up to seven hours of use for a tablet from a full three-hour charge. When it’s time to board, the tray unclamps easily and folds to slip into your carry-on. The battery can also be used on its own during flight. 11" W x 5 1/2" D x 1 1/4" H. (12 oz.)