Seiko Cal. 6164 - 635

The Seiko 6164-635 represents an important milestone in Seiko's 1965 lineup. Powered by the 6164 caliber with 36j jewels beating at 28,800 bph, it delivers a 55 hours power reserve. [seikata-wm-8c44932aa389]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

10.2mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1965

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