Product name: LED backpack Model No.: PB03 Pitch: 3.75mm Pixel: 64x64dots Screen size: 32x42x16 Bag size:  W31cm*H42cm*D16cm Display color:  Full color  Bag color: Black, BLUE, Pink option Communication mode:  Blue tooth APP Display message: Text,  Image, Photo, Graffiti, Animation Voltage:  5V   ( can connect the Power bank)