This sleek desktop is contemporary and minimalistic. It has quiet-touch keys for a serene typing experience and a full-size mouse that provides comfortable, precise navigation. The Wireless Desktop 900 also includes Advanced Encryption Standard (AES) which is designed to help protect your information by encrypting your keystrokes. Both keyboard and mouse have an average battery life of 2 years. 2x AA and 2x AAA batteries required (included). Keyboard:Black. Plug and play. Cordless. USB connectivity. Programmable hot keys. Mouse:Optical sensor. Nano receiver. Scroll wheel. Battery indicator light. Approximately 24 months battery life. General information:Batteries required 2 x AA (included) . Manufacturer’s 3 year guarantee. EAN: 8853701654568.