Upgrade bluetooth programmingThrough the bluetooth application on the iOS or android device, 550 English characters can be stored, the message can be input into the led badge, and the content of the display screen can also be modified on the computer. With 8 levels to speed up the display speed, it can be adjusted according to your needs, with a variety of display mode adjustment settings, moving up and down, left and right, fixed, flashing, marquee, scrolling, etc. Flexible FixingWith 2 ways to wear, detachable magnet, easy to fix on refrigerator, metal plate or ironically without any damage. It can also be attached to clothing with a safety pin to prevent loss. High-capacity batteryBuilt-in rechargeable 260mAh lithium battery charges for 2-3 hours, can last about 16-26 hours at 25% brightness, 10-13 hours at 100% brightness (brightness can be adjusted in 4 levels ) when necessary, fully charge it via the USB port. Wide ApplicationsWith eye-catching LED labels, it will help you attract more attention, including ideas for displaying your name, mood, reminders and advertisements on exhibitions, trade shows, parties, nightclubs, hotels, point Brighten anything you want. 1. You can modify the display font on the mobile APP 2. Various adjustment modes 3. High-capacity battery, long use time Product parameters: Battery capacity: 260mAh Battery type: lithium battery Charging time: 2-3 hours Standby time: 26 hours Screen size: 85*23mm Product size: 93*30*6mm Font spacing: 1.93mm Use time: 10-26 (depending on the brightness of the display, the use time is different) Wearing method: pin, magnet Brightness adjustment: 4 levels Storage capacity: 350 Chinese characters or 550 English characters Product List: 1*LED badge light 1*English manual 1*USB charging cable 1*Magnet