Seiko Cal. 6656 - 635

The 6656-635 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6656 caliber with 25j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-01b41fdf90a1]

Also known as: Sportsmatic

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

9.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

100m

Dial Color

Navy

Jewels

25j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1978

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