Programmable Keyboard 3 Knobs 15 Keys Portable RGB Bluetooth DIY Mechanical Gaming Keypad for Office Laboratory Item Type: Programmable Keyboard Material: Acrylic, PCB Connection Mode: Bluetooth /USB System Support: for Windows, for VISTA, for Linux, for OS X Button Life: Up to 50 million times Light: RGB Type: Dustproof green shaft Key Number: 15 keys Product Size: Approx: 185x77x39mm/7.28x3.03x1.53in Current Voltage: DC 5V/1A Operating Temperature: -10℃-50℃ Battery Type: 400mAh lithium battery x1 (built in) Shortcut Key Overlay: 18 characters Suitable for office, games, music, media, industrial control, laboratory, production line testing and other fields. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store