Feature:- Post content anytime, anywhere, with simple operation and eye-catching effects;-The product can be moderately bent to ensure the clarity of the screen and the authenticity of the display effect;-The backpack has a large capacity and can hold the necessities for a day out. It is breathable and not stuffy, and is lightweight and convenient without affecting work;- Powered by a universal power bank, the 10,000 mAh power bank has a standby time of more than 6 hours;-The front of the product is made of TPU waterproof cloth, which is super waterproof.Basic parametersProduct name: LED backpackLED screen dot matrix resolution: 64*64Screen motherboard size: 250*250MMDisplay size: 237*237MMGraphics and text support: text, pictures, animations (GIF format), graphic and text combinationsCommunication method: Bluetooth communication (mobile APP)Working voltage: 5VMaximum operating current: 1.5APower supply method: universal power bank power supplyLanguage type: supports multiple languagesProduct opening size: 46*36*16cmProduct net weight: 2.06KGPackage list:LED backpack*1Notice:This product needs to be used with a mobile power supply. Due to transportation issues, this product does not include a power bank.Since measurements are taken by hand, the dimensions shown may vary slightly. Thank you for your understanding.Actual colors may vary slightly from images due to different monitors and lighting effects.