Seiko Cal. 5644 - 664

This Spring Drive model from 1998 features a 35mm PVD Black case. It features a Green dial protected by a Mineral crystal and offers 150m of water resistance. [seikata-wm-1b99dd19d7cf]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

35mm

Case Thickness

14.2mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Green

Jewels

32j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1998

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