Seiko Cal. 4427 - 236

The 4427-236 is a sought-after Quartz piece from Seiko's golden era. It features a Black dial protected by a Acrylic crystal and offers 90m of water resistance. [seikata-wm-53e1a7ab09bc]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

39mm

Case Thickness

12.5mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

90m

Dial Color

Black

Jewels

20j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1968

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