Robust and chargeableAdaptable 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 forcontinuous professional use.- 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 metres)- 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 (1000/2000 dpi) with ergonomic side panels- Easy to install requiring no technical knowledge- Keyboard awarded the "Blauer Engel" environmental seal