Seiko Cal. 5637 - 827

The 5637-827 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Cream dial protected by a Sapphire crystal and offers 60m of water resistance. [seikata-wm-65344ecb2c02]

Also known as: World Timer

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

43mm

Case Thickness

14.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

60m

Dial Color

Cream

Jewels

20j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1971

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