LONGTIME: Include with more than 1000mA Battery, like wireless use, it can be used continuously for 16 hours. If you charge in the middle, you can use the keyboard without worrying about the battery. Wired connection to computer, wireless Bluetooth connection to mobile phone, tablet, notebook, simultaneous connection of three Bluetooth devices. Brushed panel, mobile phone tablet bracket, light adjustment rocker, brightness adjustment knob. The full keyboard has no punching mechanical green axis, with a classic appearance and classic quality. Colorful/white backlight effect to meet the needs of game scenes.Retro style round keycap. The round keycaps are made of impact-resistant material, high-strength and wear-resistant, and experience the refreshing feeling of striking like a retro typewriter. OCCASION: Can be operated freely and conveniently in different places at home, school, coffee shop, and work and play whatever you want. Specification: Model number:TW1867 Applicable models: general purpose Button technology: mechanical shaft Backlight function: seven colors backlight Number of buttons: 83 buttons Keyboard Interface:USB/Bluetooth Charging cable length: 1.5 meters Number of buttons: 83 buttons Color:Black Size Chart: 327x169x43mm/12.87x6.65x1.69inch Package Includes: 1x TW1867 Keyboard 1x Power Cable 1x Manual Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping