I think the FLX-4 is a popular product, but this product is more than sufficient for practicing at home. Recently, I've been working more at clubs, and I rarely use it at home, so I'm selling it. This is a Pioneer DJ DDJ-SB2 controller, compatible with Serato and rekordbox, featuring two large control wheels and built-in effects. - Brand: Pioneer DJ - Model: DDJ-SB2 - Compatible Software: Serato, Rekord Box - Control Wheels: Two large control wheels - Effects: Built-in effect control - Pads: 8 pads (sample, hot cue) - Connection: USB connection - Size: Compact design Comes with the original box. Thank you for looking.