• Control Knob
• Use PowerMate to speedily shuttle through large multimedia files, spreadsheets, word processor documents, great for DJing.
• Connect as many as 127 PowerMates and assign an independent function to each of them
• Comes with presets for a wide range of applications, and easy-to-follow instructions for adding your own
• Limited Warranty period (parts): 1 year
  Limited Warranty period (labor): 1 year

Griffin NA16029 Powermate USB Multimedia Controller

Please feel free to ask if you have the product which I do not list.I will do my best to provide at competitive price.