Seiko Cal. 5689 - 638

The 5689-638 is a sought-after Automatic piece from Seiko's golden era. It features a Silver dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-21eb258c1824]

Also known as: Helmet, Sea Horse

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

45mm

Case Thickness

11.7mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Silver

Jewels

30j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1968

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