The 4100 wireless keyboard and mouse set adopts ergonomic design, the character surface adopts UV printing process, and has multimedia keys, which can meet the needs of business office, greatly improve the operation efficiency, and ensure a longer service life. The mouse DPI is adjustable, ranging from 800-1200-1600, which can meet the needs of business office and greatly improve the operation efficiency. Whether you are studying in a quiet office, or in the library, or working in the middle of the night, it will create a comfortable environment for you. Suitable for office, home, outdoor leisure and entertainment, etc., it can easily cope with various occasions, and the comfortable and soft touch coating will make you happy for a long time. The USB transmitter is plug and play and can serve you for a long time.