Ergonomic design black mouse with 5 buttons for comfortable operation. (Product Overview) ・This is a wireless mouse with an ergonomic design that keeps your wrist in a natural position. ・It's a wireless type that can be used without worrying about cables. ・The 2.4GHz digital band is resistant to radio interference, enabling stable data communication over a wide range of 10 meters. ・The new design allows you to lightly rest your hand on the side, reducing wrist twisting and allowing you to grip it at a natural angle, so it doesn't strain your wrist even after prolonged use. ・When you place your hand on the mouse, it is designed to position your fingers naturally on the left and right click buttons. ・Equipped with a high-performance laser engine, it can read the surface of glossy materials that were difficult to identify with conventional optical sensors. ・It is equipped with side back and forward buttons, allowing for speedy operation of web browsers. ※Cannot be used with Apple Mac series. ・It has a cursor speed switching function that allows you to change the cursor speed according to your needs. You can switch between 4 levels: 400, 800, 1600, and 3000. Details => https://www.sanwa.co.jp/product/syohin?code=MA-ERGW6