Seiko Cal. 3888 - 731

Seiko 3888-731

The 3888-731 is a sought-after Kinetic piece from Seiko's golden era. With its 22mm lug width and 13.8mm profile, it sits comfortably on most wrists. [seikata-wm-8debe127c4e5]

Also known as: Sportsmatic, Emperor

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
44mm
Case Thickness
13.8mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
90m
Dial Color
Silver
Jewels
32j
Frequency
28,800 bph
Power Reserve
48 hours
Year
1971

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