Seiko Cal. 3870 - 929

The Seiko 3870-929 represents an important milestone in Seiko's 1977 lineup. It features a Black dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-bb557e8c99d6]

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

9.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Black

Jewels

36j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1977

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