It's time to revisit one of On: Design's favorite designers — Kouichi Okamoto, who designs under the name Kyouei.

Recently, Okamoto has been working more on one-off items, but this month he launches a brand new product that sounds really good — literally.

The Square Wind Bell is a minimalist design of two thin, interlocking iron plates. Balance the larger square panel over the top of a glass with the diamond shape inside the glass and you have a wind chime. The square plate catches the breeze, pushing the diamond one to hit the insides of the glass. The result is a gentle clinking sound.