Seiko Cal. 4530 - 644

The 4530-644 is a sought-after Spring Drive piece from Seiko's golden era. It features a Navy dial protected by a Mineral crystal and offers 170m of water resistance. [seikata-wm-c9fd2cf1e0f3]

Also known as: Monster, Silverwave

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

43mm

Case Thickness

10.9mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Navy

Jewels

24j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1975

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