I am selling the WI&Fi S3B handmade mouthpiece, made in Taiwan. The S3 is similar in design to a Vandoren BD5, but the material is original (V-Quartz, which is rubber hardened with crystal). This results in quick articulation and a very compact sound that is easy to produce. This mouthpiece was renewed in April of this year with improved materials, and I felt that it projected sound further than the previous version. I have been using mouthpieces with wider openings, like the B40, recently, so I am selling this one. I recommend this mouthpiece to those who like the BD5 and those who want something easy to play with less air (conversely, it may not be suitable for those who want to blow strongly). I used V12 reeds, size 3 1/2 to 3 1/2+. The original pouch was quite fuzzy, so I will include a Selmer pouch instead. Thank you.