Seiko Cal. 3870 - 104

The Seiko 3870-104 represents an important milestone in Seiko's 1989 lineup. It features a Black dial protected by a Mineral crystal and offers 80m of water resistance. [seikata-wm-f48e8e60725c]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

42mm

Case Thickness

13.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Black

Jewels

28j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1989

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