Product Color: Tyrant Gold, silver, black1. [WHISPERING MUTE]: Lowest volume keyboard and whisper mute mouse bring quiet surroundings. Suitable for home, library, conference room, cafe and other occasions.2. [FASHION AND COMFORTABLE]: This wireless keyboard design for a comfortable visual experience.nbsp; Ergonomic design, let it use for a long time in a good mood.3.[BIG COMPATIBILITY]: This keyboard is suitable for Windows, XP, Mac OS, Vista, Linux and other systems, but not suitable for IOS system.nbsp;4.[MORE STABLE CONNECTION WITH 2.4G TECHNOLOGY]:With 2.4G wireless technology, everything is more stable and easier. No installation necessary, you have a larger range up to 10m.5.[WIRELESS KEYBOARD AND MOUSE 2 IN 1]: Keyboard and mouse must be connected to the device using a USB receiver. A good choice for long work with computers. Wireless design gives you a cleaner desktop, and get rid of the problems caused by the cable.nbsp;