Check the listing for details. M-Audio Oxygen 49 USB Midi Keyboard Controller, Home Recording Gear, CE01043. Condition: Used. Listed at 120.00 USD. This is the "M Audio Oxygen 49 USB Midi Keyboard Controller". I used this for a number of years in my home studio before putting it in storage a few years ago when marriage and kids came along!It works fine. It's USB powered / Silver Finish / 49 Keys / USB Midi / Midi Output.It measures 31" in length x 9 5/8" depth x 3 3/8" thickness. It weighs 7lb 11oz.Original connection cable included.CONDITION: This keyboard works fine. It is however a little dusty and could probably do with a quick clean; it also has odd dinks and marks in it. Examine all the photos. Zoom in and out. The photos serve as a document as to its condition.Shipping is FREE for mainland USA. All my items are well packed and fully insured. Local pick-up also available from L.A. 90291. If you pick it up I will reduce the price. Message me for detals.