Seiko Cal. 5646 - 827

The Seiko 5646-827 represents an important milestone in Seiko's 1970 lineup. The Fixed bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-fa14516a3ded]

Also known as: Monster, Emperor

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

13.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

80m

Dial Color

Burgundy

Jewels

28j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1970

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