ELECOM USB Wireless Trackball Keyboard (Receiver Included), Premium Membrane, Key Assignments, Wrist Rest, Black, TK-TB01DMBK

This premium membrane keyboard features the same keycap design as a mechanical keyboard, providing a comfortable typing experience. It's a wireless keyboard with an optical trackball, right-click and left-click mouse functions, back and forward buttons, and a mouse wheel, allowing you to simultaneously operate a mouse. The EXTRA TOUCH series features a "Step Sculpture" structure, with each key arranged like a staircase and the top of each key curved to accommodate finger movement, and a "Cylindrical" structure, with a recessed top, eliminating mistyping and unnecessary finger movement for a comfortable typing experience. The keyboard features durable keys rated to withstand 10 million keystrokes. It features an adjustable tilt stand with two tilt settings. The 19mm key pitch and 108-key Japanese layout provide comfortable typing. The receiver can be stored inside the keyboard. It features a battery level indicator that notifies you when it's time to replace the battery. It also features a power switch to prevent battery wear when not in use. A gaming-grade, high-performance optical sensor is used to detect trackball movement, and the color of the trackball, the thickness of the coating layer, etc. are thoroughly analyzed to suit the optical sensor, achieving the ultimate in pointer tracking performance.