Seiko Cal. 6630 - 539

The 6630-539 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Champagne dial protected by a Hardlex crystal and offers 50m of water resistance. [seikata-wm-6398ff9096e6]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

44mm

Case Thickness

14.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Champagne

Jewels

36j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1969

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