Seiko Cal. 3878 - 397

Seiko 3878-397

The 3878-397 is a sought-after Quartz piece from Seiko's golden era. Powered by the 3878 caliber with 31j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-275e31ab7e09]

Also known as: Sea Horse, Golden Tuna

Specifications

Movement
Quartz
Case Material
Two-Tone
Case Width
38mm
Case Thickness
12.2mm
Lug Width
19mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
90m
Dial Color
White
Jewels
31j
Frequency
36,000 bph
Power Reserve
44 hours
Year
1982

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seikata-wm-275e31ab7e09