Seiko Cal. 5634 - 781

The 5634-781 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Champagne dial protected by a Sapphire crystal and offers 80m of water resistance. [seikata-wm-7d0d483d46d0]

Also known as: Bullhead, Helmet

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

46mm

Case Thickness

10.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Champagne

Jewels

23j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1970

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