Seiko Cal. 5631 - 867

The 5631-867 is a sought-after Quartz piece from Seiko's golden era. It features a Silver dial protected by a Sapphire crystal and offers 170m of water resistance. [seikata-wm-d51052abc627]

Also known as: UFO, Flighty

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

44mm

Case Thickness

10.0mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Silver

Jewels

17j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1976

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