Seiko Cal. 4531 - 910

This Hand-Winding model from 1968 features a 36mm Hardlex-Coated Steel case. It features a Silver dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-4acbbe42cf09]

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

8.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Silver

Jewels

21j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1968

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