ship from Japan [Interface]: USB HID specification version 1.1 compliant [Connector shape]: USB Type-C connector male [Resolution]: 1000 counts / inch [Button]: 2 buttons, wheel (scroll) button [Reading method]: Optical sensor method (blue LED) [Size]: Approx. W59 x D99 x H37 mm Weight: about 76g [Cable length]: Approximately 1.5m