Seiko Cal. 5631 - 455

The Seiko 5631-455 represents an important milestone in Seiko's 1968 lineup. It features a Burgundy dial protected by a Sapphire crystal and offers 120m of water resistance. [seikata-wm-70a0c9a1125e]

Also known as: Pogue, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

11.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Burgundy

Jewels

20j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1968

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