... 100% silicone,waterproof,dustproof. 4.Protable 2.4g mini wireless backlit keyboard with touchpad Product specifications:Ultra slim design: the flexible ... to 55C Humidity:20%-50%Adopt 2.4GHZ frequency wireless transmission strong anti-jamming capability The effective electricity-saving ... for daily use . Operation of Computer system requirements:Work with Windows 98, ME, 2000, XP, Vista and Apple ...