Seiko Cal. 4542 - 221

The 4542-221 is a sought-after Spring Drive piece from Seiko's golden era. It features a Green dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-c4ea258cace0]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

11.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Green

Jewels

31j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1973

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