Seiko Cal. 3884 - 721

Seiko 3884-721

The 3884-721 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 3884 caliber with 27j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-2b19dcf28476]

Also known as: UFO, Emperor

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
41mm
Case Thickness
13.8mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
130m
Dial Color
White
Jewels
27j
Frequency
28,800 bph
Power Reserve
41 hours
Year
1991

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seikata-wm-2b19dcf28476