Seiko Cal. 6637 - 616

The Seiko 6637-616 represents an important milestone in Seiko's 1976 lineup. The Bidirectional bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-c838ddf29c7e]

Also known as: Emperor

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

36mm

Case Thickness

13.4mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Navy

Jewels

26j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1976

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