Seiko Cal. 3817 - 161

Seiko 3817-161

The 3817-161 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3817 caliber with 27j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-41e2d4b87307]

Also known as: UFO

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
43mm
Case Thickness
14.3mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
120m
Dial Color
Black
Jewels
27j
Frequency
36,000 bph
Power Reserve
49 hours
Year
1980

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