Batteries Supplied: Yes. Battery Type: 2 x AAA. Brand: Technika. Connectivity: USB. Features of Product: 800dpi optical sensor. 27MHz wireless frequency. Laptop Mouse: No. No of Buttons: 3. Orientation: Right Handed. Programmable Buttons: No. Retractable Cable: No. Scroll Wheel: Yes. Ultra Compact Receiver and Transmitter: No. Wireless: Yes - 2.4GHz.