LED Chest Bag】LED Chest bag with LED Full-Color Screen can dynamically display your favorite text pictures and animations and the screen is waterproof. 【Easy to use】1.Plug the backpack into a power bank;https://offerup.co/faYXKzQFnY?$deeplink_path=/redirect/ download APP;3.Connect WIFI.Every bag has a manual, don’t worry about not using it. 【You can do this】1.Colorful Text and Graffiti :Enter the words you want to say and creative graffiti in the APP to play on the backpack,You can advertise or show https://offerup.co/faYXKzQFnY?$deeplink_path=/redirect/ and Animations:Uploading pictures in the app is as easy as sending an emoji on whatsapp. It can dynamically display GIF. 【Small size, large capacity 】 Only 32.5*22*7 cm, 428g, Large zippered pocket is for Tablets. Small zippered pocket for phones, power bank, wallet or outdoor/travel sundries. 【Best Gift 】The bag have a beautiful packaging gift box and the combination of LED Screen and Bag Is a Surprise Gifta for men/women.