Seiko Cal. 5639 - 435

The Seiko 5639-435 represents an important milestone in Seiko's 1966 lineup. It features a Silver dial protected by a Mineral crystal and offers 160m of water resistance. [seikata-wm-cb5ca9ace23b]

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

40mm

Case Thickness

8.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Silver

Jewels

28j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1966

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