Features: 1. With clean lines and an ultra-flat design, USB port. 2. Scissor Keys. 3. With notebook key style, ultra-thin body. 4. Stop,Play/pause,Pre-track,Next track,Mute,VolumeUp/Down,E- mail,Search,Home,Refresh hotkeys. 5. Multimedia Control. 6. Internet Forward/Back. 7. Compatible with Windows 98/ME/2000/NT/XP. 8. Size:465 x 186x20.5mm.