Seiko Cal. 5639 - 620

The Seiko 5639-620 represents an important milestone in Seiko's 1977 lineup. Powered by the 5639 caliber with 36j jewels beating at 28,800 bph, it delivers a 38 hours power reserve. [seikata-wm-7c84e87051b3]

Also known as: Panda

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

13.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Cream

Jewels

36j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1977

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