Seiko Cal. 7143 - 421

The 7143-421 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 7143 caliber with 24j jewels beating at 28,800 bph, it delivers a 44 hours power reserve. [seikata-wm-7ca833497bd9]

Also known as: World Timer, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

10.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Silver

Jewels

24j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1968

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