Seiko Cal. 3874 - 280

The 3874-280 is a sought-after Automatic piece from Seiko's golden era. It features a Navy dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-90db026ff1cd]

Also known as: Sumo, Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

34mm

Case Thickness

13.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Navy

Jewels

35j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1978

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