Seiko Cal. 3891 - 735

Seiko 3891-735

The 3891-735 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3891 caliber with 32j jewels beating at 21,600 bph, it delivers a 45 hours power reserve. [seikata-wm-c9424ce82ceb]

Also known as: Tuna, Emperor

Specifications

Movement
Spring Drive
Case Material
Two-Tone
Case Width
34mm
Case Thickness
8.9mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
160m
Dial Color
Blue Sunburst
Jewels
32j
Frequency
21,600 bph
Power Reserve
45 hours
Year
1969

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