Seiko Cal. 4437 - 850

This Hand-Winding model from 1979 features a 40mm PVD Black case. It features a Silver dial protected by a Sapphire crystal and offers 170m of water resistance. [seikata-wm-a3c3fb8a5d4f]

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

9.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Silver

Jewels

27j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1979

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