Seiko Cal. 6690 - 488

The 6690-488 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Navy dial protected by a Mineral crystal and offers 30m of water resistance. [seikata-wm-aae257cd2ce4]

Also known as: Rally

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

10.4mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

30m

Dial Color

Navy

Jewels

31j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1981

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