Seiko Cal. 6657 - 374

This Hand-Winding model from 1991 features a 43mm Titanium case. Powered by the 6657 caliber with 17j jewels beating at 36,000 bph, it delivers a 58 hours power reserve. [seikata-wm-a433906da8fb]

Also known as: Bullhead, Rally

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

43mm

Case Thickness

15.3mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

17j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1991

Related Models

• Seiko 7149-344
• Seiko 0740-293
• Seiko 5621-796
• Seiko 7130-521
• Seiko 5244-132
• Seiko 6693-957
• Seiko 7010-568
• Seiko 6363-523
• Seiko 7130-318
• Seiko 7121-684
• Seiko 6614-954
• Seiko 6186-485