Seiko Cal. 3878 - 837

Seiko 3878-837

The Seiko 3878-837 represents an important milestone in Seiko's 1982 lineup. Powered by the 3878 caliber with 31j jewels beating at 21,600 bph, it delivers a 51 hours power reserve. [seikata-wm-d000743ccd48]

Also known as: Sumo

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
35mm
Case Thickness
13.4mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
130m
Dial Color
Champagne
Jewels
31j
Frequency
21,600 bph
Power Reserve
51 hours
Year
1982

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