1、Can display all national languages. 2、Can store 550 Chinese characters or 750 English characters or picture information of the same capacity. 3、Short press the brightness button to adjust the brightness, long press the brightness button to control the on/off of the machine. 4、Short press the information button to switch information. 5、8 levels display speed, 1 is the slowest, 8 is the fastest. Item Type: LED Name Badge Optional Color: Blue, Yellow, White Point Spacing: 1.93mm Dot Array: 11x44 Material: ABS plastic, reverse buckle installation. Dimensions: Approx. 93 x 30 x 6mm / 3.7 x 1.2 x 0.2in Screen Size: Approx. 85 x 23mm / 3.3 x 0.9in Display Language: All national languages Storage Content: It can store 550 Chinese characters or 750 English characters or image information of the same capacity. Switch Button: 1. Press the brightness button to adjust the brightness. Press and hold the brightness button to turn the machine on and off. 2. Short Press the information button to switch the information. Display Speed: 8 levels, 1 is the slowest, 8 is the fastest Display Mode: Move up, down, left and right, fixed, flashing, snow, marquee, scroll, animation, laser Charging Time: 2 hours Battery Capacity: 180mah, 3.7V. Turn on the remaining battery. Working Time: 24 hours (when the brightness is 25%); at least 12 hours (when the brightness is 100%) 1 x LED Name Badge 1 x Data Cable 1 x Compact Disk