Seiko Cal. 4521 - 621

The 4521-621 is a sought-after Spring Drive piece from Seiko's golden era. It features a Green dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-c9d6d20057a6]

Also known as: Samurai, Flighty

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

8.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Green

Jewels

30j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1970

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