Seiko Cal. 6657 - 432

This Hand-Winding model from 1997 features a 38mm PVD Black case. Powered by the 6657 caliber with 18j jewels beating at 28,800 bph, it delivers a 44 hours power reserve. [seikata-wm-4fd7e9d67282]

Also known as: World Timer

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

38mm

Case Thickness

12.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Black

Jewels

18j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1997

Related Models

• Seiko 7156-874
• Seiko 0781-876
• Seiko 6376-257
• Seiko 6625-896
• Seiko 6189-112
• Seiko 6639-290
• Seiko 7090-361
• Seiko 6138-424
• Seiko 4431-296
• Seiko 3842-410
• Seiko 7012-916
• Seiko 0772-129