Robust and chargeable.Adaptable and robust The CHERRY B. UNLIMITED 3.0, with its high-quality NiMH batteries and interference-free wireless 2.4 GHz technology with AES encryption, is designed for continuous professional use.Key benefits Durable abrasion-proof laser inscription of key caps USB cable charging function for both keyboard & mouse - even when in use Designed for continuous usage - over 20 mill. Confirmations per key High-quality, pre-charged NiMH batteries from GP with a very low self-discharge Almost interference-free wireless 2.4 GHz technology (range of up to 10 meters) Data transmission using 128-bit encryption, complying to Advanced Encryption Standard (AES) Multi-station capability operation of several wireless products in one room 3-button mouse: infrared sensor and adjustable resolution 1,000/2,000 dpi) with ergonomic side panels Easy to install, requiring no technical knowledge Keyboard awarded the "Blue Angel" environmental seal