ELECOM Mouse 2.4MHz One M size mouse. I have not opened it since I purchased it. I bought this mouse with the intention of using it when I bought my computer, but I decided to use the one that came with the keyboard I bought separately, so I am selling this one. How about a power-saving mouse? I welcome combined purchases with other products! If you purchase multiple items, I will offer a small discount! ELECOM Elecom Mouse Keyboard Computer Low power Wireless 2.4MHz M size