ship from Japan Suitable for laptopsThe USB receiver is also very small, just set it in the USB slot and you can use it, ideal for those who are not good at touchpad. Windows/Mac/Chrome OS support] Compatible with Windows 7, Windows 8, Windows 10, Windows RT, Mac OS 10.5 or later, and Chrome OS The resolution of 1,000dpi, 3 buttons (including wheel button). With one alkaline AAA battery, you can use it for up to 6 months. Operating distance: Approx. 10m. wireless Main unit size (W x D x H): 49.4 x 81.9 x 31.8 mm Reading method optical