Adaptable and robust The CHERRY B. UNLIMITED 3.0 has features including high-quality, pre-charged NiMH batteries and interference-free wireless 2.4 GHz technology with AES encryption via USB. Multi-user capacity means you can use it with several desktop computers and the resolution of the symmetrical wireless mouse can be switched from 1000 dpi to 2000 dpi. With a service life of more than 20 million strokes for each key, the charging function via USB lead even during operation, and the permanent, non-wearing laser key inscription, this desktop set is designed for professional use.