Seiko Cal. 3850 - 637

The Seiko 3850-637 represents an important milestone in Seiko's 1966 lineup. It features a Champagne dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-95fc93547ac4]

Also known as: Sportsmatic, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

35mm

Case Thickness

11.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

140m

Dial Color

Champagne

Jewels

26j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1966

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