MOJO Silent Vertical Ergonomic Neutral Grip Optical Wireless Mouse BLACK Silent Design Powered by rechargeable Li-ion battery Transmission Range: 10m, Frequency: 2.4GHz What's Included: Wireless Vertical Mouse, Charger Cable, USB Adapter 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.