Seiko Cal. 5684 - 247

The Seiko 5684-247 represents an important milestone in Seiko's 1971 lineup. Powered by the 5684 caliber with 32j jewels beating at 36,000 bph, it delivers a 62 hours power reserve. [seikata-wm-eec463aff70e]

Also known as: Helmet, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

9.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Cream

Jewels

32j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1971

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