Seiko Cal. 5639 - 780

Seiko 5639-780

The 5639-780 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5639 caliber with 31j jewels beating at 21,600 bph, it delivers a 43 hours power reserve. [seikata-wm-37b286433740]

Specifications

Movement
Automatic
Case Material
Stainless Steel
Case Width
42mm
Case Thickness
12.3mm
Lug Width
21mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
100m
Dial Color
White
Jewels
31j
Frequency
21,600 bph
Power Reserve
43 hours
Year
1993

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seikata-wm-37b286433740