Identify Your Watch

Serial Number Engraving

A unique alphanumeric code engraved on the case back that identifies your individual watch. This number is typically used for warranty registration, service history, and authentication.

Model Number Stamp

An alphanumeric code stamped on the case back that identifies the specific watch model or product line. This number is essential for ordering replacement parts and identifying your watch's specifications.

Water Resistance Rating (Case Back)

A marking indicating the watch's tested water resistance depth, typically shown in meters, feet, bar, or ATM. This rating describes laboratory test conditions, not actual diving depth recommendations.

Case Material Marking

An engraving or stamp indicating the material the watch case is made from, such as stainless steel, titanium, or gold. This marking helps verify authenticity and informs care and maintenance decisions.

Crystal Press Back Symbol

A small symbol on the case back indicating it should be opened with a crystal press tool rather than unscrewed. This marking guides watchmakers on the correct method for case back removal.

Japan Movement Stamp

A case back marking indicating the watch uses a movement manufactured in Japan. This is commonly seen as "JAPAN MOVT" or "JAPAN MOVEMENT" and denotes the origin of the caliber inside.

Watch Back Markings

Bracelet Markings

Case Markings

Movement Markings

Water Resistance Markings

Country of Origin Marks