Seiko Cal. 5631 - 699

This Solar model from 1978 features a 43mm PVD Black case. It features a Burgundy dial protected by a Mineral crystal and offers 170m of water resistance. [seikata-wm-eebfbcfbed11]

Also known as: Bullhead

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

43mm

Case Thickness

12.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Burgundy

Jewels

29j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1978

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