Seiko Cal. 6636 - 743

Seiko 6636-743

The 6636-743 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6636 caliber with 23j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-288d414005ff]

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
46mm
Case Thickness
13.7mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
170m
Dial Color
Cream
Jewels
23j
Frequency
36,000 bph
Power Reserve
40 hours
Year
1969

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