... words are hardly to be worn.2> More than 10 million keysrokes percussion life. 3> Using high quality silicone materials, the flexibility feel ... wireless transmissionTransmission distance10 metersColorAvailable in various colorsInput powerOnly need one No.7 batterySystem requirementsWindows98,ME,2000,XP,2003,X64,IBMReceiverUSB 2.0 Wireless Keyboard & mouse combo ...