Charging function via USB charging cable for keyboard and mouse - even during operation^^Virtually interference-free, wireless 2.4 GHz technology (up to 10 m range) ^^3 button mouse: Infrared sensor and switchable resolution (1000/2000 dpi) suitable for right- and left-handers^^Data transmission with 128-bit encryption according to Advanced Encryption Standard (AES) ^^Designed for continuous use - over 20 million actuations per button