Seiko Cal. 6689 - 644

The 6689-644 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Burgundy dial protected by a Acrylic crystal and offers 190m of water resistance. [seikata-wm-29bb6f9ba1b2]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

34mm

Case Thickness

12.3mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Burgundy

Jewels

22j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1987

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