Color: Green LED - Large 12 x 36 dots screen display - Pitch: 1.85mm - Can display 1500 English characters 650 Chinese characters 2 pictures 11 animated icons - 5 different speeds and 4 brightness (25% 50% 75% 100%) adjustable - Communication via PC (USB cable included) - Closed back design - Magnetic adsorption - Display language: English / Simplified Chinese / Traditional Chinese / Korean / Japanese / Russian and the language of all European countries - Perfect as name badge or slogan display for tradeshows exhibitions conventions promotions and advertisings - Powered by rechargeable 240mAh battery - Working time: 8~12 hours (25% brightness) - Charging time: 2~3 hours - Work Voltage Range: DC 5V