This is the Yamaha WX5 Wind-Synth Controller. This is the standard grey version.
Mine is marble blue. I love it because it allows me to play music easily while having very little talent!
This is the Yamaha VL70-m tone module. The WX5 is connected to this or another sound module. The sound is created by the module and controlled by the wind-synth. Together, they can sound like anything you can imagine.