Seiko Cal. 3866 - 903

This Hand-Winding model from 1966 features a 45mm Two-Tone case. It features a Green dial protected by a Sapphire crystal and offers 40m of water resistance. [seikata-wm-18e4e25b480a]

Also known as: Monster

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

45mm

Case Thickness

13.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Green

Jewels

18j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1966

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