Seiko Cal. 3891 - 656

Seiko 3891-656

The 3891-656 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 3891 caliber with 18j jewels beating at 21,600 bph, it delivers a 68 hours power reserve. [seikata-wm-233ced507c11]

Also known as: Turtle

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
36mm
Case Thickness
12.5mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
120m
Dial Color
White
Jewels
18j
Frequency
21,600 bph
Power Reserve
68 hours
Year
1975

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seikata-wm-233ced507c11