MOJO Silent Folding Optical Wireless Arc Mouse Portable Compact 2.4GHz BLACK Easily connects with your computer, laptop, and other devices with included USB adapter. Powered by 2xAAA batteries (not included) Frequency: 2.4GHz, Transmission Range: 10m Max 1200 cpi resolution, Product dimensions (unfolded): 4.25" x 2.25" x 1.5" MOJO LLC offers an exclusive manufacturers warranty for 60 days with this mouse. This warranty is exclusive to sales through MOJO only. Purchases made from unauthorized resellers are not eligible for this warranty.