Seiko Cal. 6143 - 736

This Hand-Winding model from 1981 features a 42mm Hardlex-Coated Steel case. It features a Green dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-88747116894e]

Also known as: World Timer, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

13.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Green

Jewels

21j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1981

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