Seiko Cal. 6637 - 373

The Seiko 6637-373 represents an important milestone in Seiko's 1977 lineup. Powered by the 6637 caliber with 34j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-17b3fb7e224c]

Also known as: Turtle

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

41mm

Case Thickness

10.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Silver

Jewels

34j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1977

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