Conn ST-11 Strobotuner. Great working condition. I bought the unit new and have used it in my recording studio business. Includes slip cover, power cord and manual. It does not have the original microphone. However, most any high impedance microphone with a 1/4 plug will work. The cents knob is missing a piece, but is tight and works fine. The Selector knob has some wear on the note markings.