Seiko Cal. 4527 - 850

The 4527-850 is a sought-after Spring Drive piece from Seiko's golden era. It features a Black dial protected by a Acrylic crystal and offers 190m of water resistance. [seikata-wm-c2f4e768c580]

Also known as: Tuna, Bullhead

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

14.1mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Black

Jewels

25j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1972

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