This timepiece boasts a 40mm stainless steel case with a 12.4mm case thickness. The mineral glass mirror and double butterfly buckle provide secure and durable construction. The movement is automatic and self-winding, while the band options include leather or stainless steel with a buckle pin or safely clasp. With a 5ATM waterproof rating and Hardlex observation window, this watch is both functional and stylish.

First, the basic knowledge of mechanical watches:
Fully automatic winding mechanical watch: It is automatically wound by the swing of the arm, so it must be worn for more than 8 hours every day to ensure accurate timing. It is also possible to supplement the energy by hand-winding by rotating the "turned" clockwise about 15 turns (without pulling out).
 manual winding mechanical watch: need to manually wind up