Seiko Cal. 6639 - 688

The 6639-688 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Burgundy dial protected by a Mineral crystal and offers 160m of water resistance. [seikata-wm-5e0575a0860c]

Also known as: Pogue

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

40mm

Case Thickness

9.4mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Burgundy

Jewels

18j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1978

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