Batteries Supplied: Yes. Battery Type: 1 x AA. Brand: Microsoft. Connectivity: USB. Features of Product: Wireless notebook mouse with microsoft high definition laser technology. Magnifier, 4-way scrolling. 4 customisable buttons. Ergonomic design for greater comfort with rubber side grips and finger grooves. Laptop Mouse: Yes. No of Buttons: 4. Orientation: Left Handed, Right Handed. Programmable Buttons: Yes. Retractable Cable: No. Scroll Wheel: Yes. Ultra Compact Receiver and Transmitter: No. Wireless: Yes - 2.4GHz.