MOJO Solar Powered Silent Mouse Quiet Optical Ninja Silent Click Noiseless Wireless Mouse Easily connects with your computer, laptop, and other devices with included USB adapter Rechargeable solar battery (can also be powered by 1 AA battery) Max 1600 dpi (adjustable), Product dimensions: 4.1" x 2.6" x 1.5" Frequency: 2.4GHz, Transmission Range: 10m 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.