Seiko Cal. 5696 - 331

The Seiko 5696-331 represents an important milestone in Seiko's 1978 lineup. Powered by the 5696 caliber with 21j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-4720d2136c7e]

Also known as: Sumo, World Timer

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

43mm

Case Thickness

15.9mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

90m

Dial Color

Champagne

Jewels

21j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1978

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