Seiko Cal. 5624 - 687

This Spring Drive model from 1968 features a 35mm Titanium case. Powered by the 5624 caliber with 24j jewels beating at 28,800 bph, it delivers a 59 hours power reserve. [seikata-wm-843f43c0a853]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

35mm

Case Thickness

10.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Navy

Jewels

24j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1968

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