Seiko Cal. 3840 - 931

The Seiko 3840-931 represents an important milestone in Seiko's 1966 lineup. It features a Green dial protected by a Mineral crystal and offers 80m of water resistance. [seikata-wm-ac7b8b757e2c]

Also known as: Shogun

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

12.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Green

Jewels

24j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1966

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