Seiko Cal. 6635 - 645

The 6635-645 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Silver dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-2eddc3fdce61]

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

12.7mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Silver

Jewels

24j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1986

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