Seiko Cal. 3874 - 909

The Seiko 3874-909 represents an important milestone in Seiko's 1966 lineup. It features a Green dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-329f334f0113]

Also known as: Sumo, Bellmatic

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

41mm

Case Thickness

15.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Green

Jewels

31j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1966

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