Seiko Cal. 5644 - 566

The 5644-566 is a sought-after Spring Drive piece from Seiko's golden era. It features a Black dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-52a02322e5a2]

Also known as: Emperor

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

46mm

Case Thickness

8.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Black

Jewels

23j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1988

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