Seiko Cal. 5644 - 317

The Seiko 5644-317 represents an important milestone in Seiko's 1978 lineup. The Inner Rotating bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-6d4dc426fd11]

Also known as: Monster, Goldfeather

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

12.9mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Black

Jewels

25j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1978

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