Interface:USB HID specification Ver.1.1 compliant *Can also be used with USB3.1/3.0/2.0 interface.;Connector shape:USB(A connector);Resolution]: 400, 800, 1200, 1600 counts/inch;Reading method]: Laser sensor method;Button]: 2 buttons, 2 side buttons, wheel (scroll) button, count change button;Size:W100×D131×H45mm;Weight:About 154g;Cable length:1.5m