Seiko Cal. 3870 - 905

The Seiko 3870-905 represents an important milestone in Seiko's 1970 lineup. It features a Champagne dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-8a3aa253aeb3]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

13.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Champagne

Jewels

21j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1970

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