The robust Cherry B. UNLIMITED 3.0 Wireless Desktop Keyboard and Mouse Set comes with AES encryption and has been awarded the "Blue Angel" environmental seal. The ambidextrous mouse has an infra-red sensor and ergonomic side panels. Other highlights: - 128-bit AES encryption (Advanced Encryption Standard) - USB charging (even during use) - Adjustable resolution (mouse, 1000 / 2000 dpi) - Multi-station operation capability Includes: - USB receiver - USB charging cable - 2 x AAA NiMH batteries (pre-inserted in keyboard) - 2 x AA NiMH batteries (pre-inserted in mouse)