Seiko Cal. 6640 - 298

The 6640-298 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Burgundy dial protected by a Mineral crystal and offers 150m of water resistance. [seikata-wm-f9f34f422111]

Also known as: Turtle, Samurai

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

41mm

Case Thickness

14.7mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Burgundy

Jewels

23j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1973

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