Seiko Cal. 3857 - 663

Seiko 3857-663

This Quartz model from 1972 features a 40mm Hardlex-Coated Steel case. Powered by the 3857 caliber with 30j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-d7f43a2cea6a]

Specifications

Movement
Quartz
Case Material
Hardlex-Coated Steel
Case Width
40mm
Case Thickness
11.1mm
Lug Width
22mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
100m
Dial Color
Cream
Jewels
30j
Frequency
28,800 bph
Power Reserve
51 hours
Year
1972

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