Seiko Cal. 6656 - 737

This Hand-Winding model from 1989 features a 35mm Hardlex-Coated Steel case. Powered by the 6656 caliber with 31j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-eb46126d8d2d]

Also known as: Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

9.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Cream

Jewels

31j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1989

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