Seiko Cal. 4540 - 824

This Hand-Winding model from 1970 features a 44mm Hardlex-Coated Steel case. It features a White dial protected by a Sapphire crystal and offers 160m of water resistance. [seikata-wm-cbf70b3a82fd]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

13.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

White

Jewels

27j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1970

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