Seiko Cal. 6646 - 985

This Hand-Winding model from 1969 features a 39mm Hardlex-Coated Steel case. Powered by the 6646 caliber with 31j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-104f5b399751]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

9.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Black

Jewels

31j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1969

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