Item Type: LED Name Badge_x000D_ Optional Color: Blue, Yellow, White_x000D_ Point Spacing: 1.93mm_x000D_ Dot matrix: 11x44_x000D_ Material: ABS plastic_x000D_ Dimensions: Approx. 93 x 30 x 6mm / 3.7 x 1.2 x 0.2in_x000D_ Screen size: Approx. 85 x 23mm / 3.3 x 0.9in_x000D_ Display Language: All national languages_x000D_ Storage Content: Can store 550 Chinese characters or 750 English characters or image information of the same capacity_x000D_ Switch Button:_x000D_ 1. Press the brightness button to adjust the brightness. Press and hold the brightness button to turn the machine on and off._x000D_ 2. Short press the information button to switch the information._x000D_ Display Speed: 8 levels, 1 is the slowest, 8 is the fastest_x000D_ Display Mode: Move up, down, left and right, fixed, flashing, snow, marquee, scroll, animation, laser_x000D_ Charging Time: 2 hours_x000D_ Voltage: 5V_x000D_ Battery Capacity: 240mah, 3.7V. Turn on the remaining battery._x000D_ Working Time: 24 hours (when the brightness is 25%); at least 12 hours (when the brightness is 100%)