USB dual-mode mouse with a simple and easy-to-use design. This is an accessory for a Japanese-made laptop (NK-NB100) (this mouse is likely made in China). I have an existing mouse, so I am selling this one unused. - Model: Dual-mode mouse - Voltage: 3.7V - Current: 15mA - Connection type: USB connection - Color: Black - Size (approx.): Length 11cm x Width 5.5cm x Thickness 2.5cm Thank you for looking.