Exceptional Comfort: Standard keyboards force you to hold your wrists and arms at angles that can cause discomfort or pain in your hand, arm, or shoulder. With Nulea ergonomic wireless keyboard, it can help you position your body more properly, with your shoulders relaxed and can reduce the risk of fatigue and injury by its split, splayed and curved design. | Easy Switching: By Bluetooth and 2.4G USB, the Nulea bluetooth keyboard can establish connections with up to three devices simultaneously and switch between them by pressing a button. This function allows you to utilize the keyboard to begin writing an email on your computer, switch to your smartphone to send a brief text message, switch to your laptop to change the background music, and then switch back to your PC to finish that email with one-tap. | Adjustable 7 Color Backlight Lighting: The wireless bluetooth keyboard has a colorful backlit design. You can choose your own brightness and lighting kind with its 3 brightness levels and 7 color options, depending on your preferences. You can choose from blue, green, red, cyan, purple, yellow, and white. Choosing your favorite keyboard setting and take your desk setup to the next level. | USB-C Quick Charging: You’re getting tired of being bothered with battery problems. With its larger internal battery (2000mAh) and longer operating time-especially when the backlight is off-this wireless rechargeable keyboard enables you to focus entirely on your work without pesky interruptions. While the battery indication is on, recharge using the USB-C charging cord. Simple and practical. | Adjustable Tilt Legs: With 4 adjustable tilt legs, you can adjust the wireless keyboard to 3 different tilt levels. So that your hand and wrist will feel less of pain because of the comfort that you will have. The purpose of this design is to always keep your wrist in a comfortable position for different postures.