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ship from Japan Ergonomic keyboard with built-in optical trackball function The trackball is placed in front of you so that you can operate the cursor while entering keys, minimizing hand movement. The trackball is a large size with a diameter of 25mm. It comes with a large wrist rest to reduce the strain on your wrist, making it comfortable to type for long periods of time. The keys are arranged in such a way as to reduce the burden on the shoulder. The scroll wheel makes it easy to scroll through the Internet and documents at the touch of a button. It has a standard 19mm pitch keytop that is easy to type on. It provides a deep, firm and superb pressing comfort that you would not expect from a membrane. You can use both keyboard and trackball with USB connection.
