The Cherry B. UNLIMITED 3.0 wireless desktop set is designed for continuous professional use. Durable key lettering, high-quality NiMH batteries and USB charging during use enable an undisrupted workflow. Other highlights: - 128-bit AES encryption for secure data transmission - Interference-free use of multiple sets in the same room - 3-button infrared mouse with adjustable resolution (1000/2000 dpi) - Blue Angel-certified Includes: - USB receiver - USB charger cable - 2 x AAA NiMH batteries (pre-inserted in keyboard) - 2 x AA NiMH batteries (pre-inserted in mouse)