Description: This LED Screen Chest Bag is a walking expression billboard, cool trendy and fashionable, show youthful vitality, let your personality stand out from the crowd. Through Phone app, you could add subtitles, gift animations, images through the app and will be displayed on the LED screen, you can change expression images anytime and anywhere Waterproof, wear-resistant, easyto take care of, protect thecontents of the bag As you plug in the power bank to the biosled this chest bag, it lights up and puts on pictures, animations, text, show for you. Can be used as chest bag, sling bag.travel bag, cross body backpack, shoulder backpack, casual daypack, sling pack bag. Specification: Brand: Biosled Product name: LED Screen Chest Bag Screen points: 64 * 64 Screen Size: Approx.19.5cm x 18.5cm/7.7 x 7.3 inch Bag Size: Approx. 32.5x 22 x 7cm/12.8 x 8.7 x 2.8 inch Net weight: 482g Communication method: WIFI link, mobile application control, DIY display effect Program support: Text / picture / graphics / GIF animation Start-up mode: mobile power supply(Not included) Package Includes: 1x LED Display Shoulder Bag Note: 1.Please allow 1~3 cm error due to manual measurement, thanks. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand, thank you！