[Reference retail price: ¥63,800] [Size: 47□18-144] Castor and Pollux, which have different front designs, are named after twin brothers from Greek mythology. The Boston shape design is a dimensional design that hides the lens thickness. The blowing process using titanium integrally applied to the bridge side is a rare processing method in the world that does not involve brazing. This is a simple and elegantly tailored model.