Seiko Cal. 3877 - 531

This Hand-Winding model from 1965 features a 46mm Stainless Steel case. It features a Green dial protected by a Acrylic crystal and offers 90m of water resistance. [seikata-wm-6eded5e4aa07]

Also known as: Tuna, Emperor

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

8.3mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Green

Jewels

35j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1965

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