Seiko Cal. 5639 - 616

The 5639-616 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Silver dial protected by a Hardlex crystal and offers 150m of water resistance. [seikata-wm-e330b6fcb048]

Also known as: Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

40mm

Case Thickness

12.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Silver

Jewels

32j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1979

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