Seiko Cal. 5645 - 639

The 5645-639 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5645 caliber with 34j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-f31e60adf6f7]

Also known as: Panda

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

10.0mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Burgundy

Jewels

34j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1996

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