Seiko Cal. 5639 - 850

The Seiko 5639-850 represents an important milestone in Seiko's 1965 lineup. It features a White dial protected by a Mineral crystal and offers 80m of water resistance. [seikata-wm-81cd31434433]

Also known as: Helmet, Bellmatic

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

14.2mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

80m

Dial Color

White

Jewels

24j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1965

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