Seiko Cal. 6631 - 623

This Hand-Winding model from 1982 features a 37mm PVD Black case. It features a Navy dial protected by a Mineral crystal and offers 160m of water resistance. [seikata-wm-c60aec5a5a52]

Also known as: Panda, Crown

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

11.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Navy

Jewels

26j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1982

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