Full-Size Ergonomic Design: Say goodbye to discomfort with the ProtoArc Ergonomic Keyboard. Unlike standard keyboards, our full-size layout features a curved, split-keyframe design that reduces muscle strain on your wrists and forearms while promoting proper posture. The scooped keys are crafted to fit your fingertips perfectly, making typing effortless and natural Adjustable Backlighting: The ergonomic keyboard features soft white LED backlighting with three adjustable brightness levels (low, mid, high). Whether you're typing in a dimly lit room or a bright office, you can set the suitable brightness to reduce eye strain and stay productive Note: The keyboard backlight adjusts based on inactivity periods to conserve power: After 1 minute: Backlight turns off (press any key to wake); After 60 minutes: Enters deep sleep mode with backlight disabled (press any key to wake the keyboard within 3 seconds, then manually turn on the backlight) Seamless 3 Device Switching: Switch betw