Compact in size, this retractable USB cable mouse makes it ideal for travelling. Ultra precise and smooth operation allows it to work on most surfaces. Interface: USB. 1600 dpi. Buttons: Left / Right / Scroller Wheel. Power requirements: working 5V / 20mA, stand by 5V / 8mA. Dimensions: 95 (D) x 62 (W) x 36 (H) mm. Weight: approx. 80g. Cable length: approx. 63 cm.