Seiko Cal. 3878 - 351

Seiko 3878-351

The 3878-351 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 3878 caliber with 17j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-8bfbe6a3b540]

Also known as: Helmet

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
45mm
Case Thickness
13.6mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
70m
Dial Color
Black
Jewels
17j
Frequency
28,800 bph
Power Reserve
61 hours
Year
1973

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seikata-wm-8bfbe6a3b540