ship from Japan Without moving the mouse pointer, the side buttons at hand are also equipped with two buttons, ‘Back / Forward’, so you can operate quickly with a Web browser. The cursor speed can be switched between 800, 1300, and 1600 counts according to the application. Easy speed switching with the push of a button. The receiver can be easily stored by simply inserting it into the back of the mouse body. Also suitable for mobile. [Interface]: USB HID specification version 1.1 compliant [Connector shape]: USB connector (Type-C type) [Wireless method]: 2.4GHz RF radio wave method [Resolution]: 800/1300/1600 counts / inch [Reading method]: Optical sensor method (blue LED) [Button]: 2 buttons, 2 side buttons, wheel (scroll) button, count switching button [Size / Weight]: Mouse / approx. W67 x D105 x H36mm / approx. 65g (without batteries), Receiver / approx. W14.5 x D18.9 x H6.3mm / approx. 2g Please check the Sanwa Supply website for product support and details.