Warranty: 3 YearsFeatures: Technical Specifications: Product : Advanced 2.4Ghz wireless technology Rated voltage/current : 5v/100ma Interface : USB nano receiver Transmission range : 10m Approx. (32 Ft) Number of Buttons : 3 Buttons Keys life : 3 Million clicks Power Type : Battery AA x 1 Size : 100x60x37 mm Weight : 50g