Seiko Cal. 5639 - 413

The 5639-413 is a sought-after Kinetic piece from Seiko's golden era. It features a Silver dial protected by a Sapphire crystal and offers 180m of water resistance. [seikata-wm-31163ae9476a]

Also known as: Helmet, Golden Tuna

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

12.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

180m

Dial Color

Silver

Jewels

17j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1970

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