Seiko Cal. 3821 - 635

The 3821-635 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Burgundy dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-64026d8002b7]

Also known as: Bullhead, Helmet

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

11.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

140m

Dial Color

Burgundy

Jewels

33j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1987

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