Adaptable and robust. The CHERRY B. UNLIMITED 3.0 is designed for professional continuous use, primarily thanks to high-quality NiMH batteries and interference-free, wireless 2.4 GHz technology with AES encryption. Permanently abrasion-resistant laser marking on the keycaps Charging function via USB charging cable for keyboard and mouse - even during operation Designed for continuous use - over 20 million keystrokes per key High-quality, pre-charged NiMH batteries from GP with very low self-discharge Almost interference-free, wireless 2.4 GHz technology (up to 10 m range) Data transfer with 128-bit encryption according to Advanced Encryption Standard (AES) Multi-user capability - operation of several wireless products in one room possible 3-button mouse: infrared sensor and switchable resolution (1,000/2,000 dpi) with ergonomic side panels Easy installation - no technical knowledge required Keyboard awarded the Blue Angel