Seiko Cal. 5639 - 402

The 5639-402 is a sought-after Quartz piece from Seiko's golden era. With its 21mm lug width and 10.3mm profile, it sits comfortably on most wrists. [seikata-wm-52936d7a1613]

Also known as: Baby Tuna, Arnie

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

38mm

Case Thickness

10.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Silver

Jewels

17j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1999

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