Seiko Cal. 5646 - 403

The 5646-403 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Navy dial protected by a Hardlex crystal and offers 90m of water resistance. [seikata-wm-31344bd2e8c4]

Also known as: Rally, Navigator

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

35mm

Case Thickness

9.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Navy

Jewels

35j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1967

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