1: This Bluetooth keyboard has 7-color backlight mode. It makes your typing easier and more convenient even in the dark. You can switch colors between red, yellow, purple, green, ice blue, blue, and white by pressing the RGB keys. When the keyboard is idle, the lights automatically turn off to save power. 2: Advanced Bluetooth 3.0 technology can provide stable, reliable and powerful connection. The keyboard is easy to connect and use, and the working distance can reach 8 meters. Don't worry about delays. The keyboard is equipped with shortcut hot keys to make your work easier and more efficient. 3: Suitable for tablets, smartphones, Surface, Samsung Galaxy Tab, iPhone iPad, iPad Air, iPad Mini, iPad Pro and other mobile devices with built-in Bluetooth, and is compatible with Android, Windows, iPad OS, iOS, and other operating systems. This Bluetooth keyboard is designed for small mobile devices such as tablets and smartphones. So, not suitable for desktop devices such as laptops, computers, etc. 4: The Bluetooth keyboard has a built-in rechargeable battery. After being fully charged, it can work continuously for 40 hours with the backlight turned off. After 15 minutes of inactivity, it will enter sleep mode to save power. You can press any key to activate and use it. No need to replace batteries frequently. The keyboard has an on/off button that can be turned off when not in use for an extended period of time. 5: The keyboard adopts a scissor switch structure, providing you with a quiet, responsive and comfortable typing experience, allowing you to focus on your work without worrying about disturbing others. The ultra-thin, compact and lightweight design fits easily into your laptop bag or backpack, making it easy to carry and use in your home school office and during business trips.