Seiko Cal. 6657 - 823

Seiko 6657-823

This Automatic model from 1985 features a 35mm PVD Black case. Powered by the 6657 caliber with 31j jewels beating at 36,000 bph, it delivers a 43 hours power reserve. [seikata-wm-6694d04edd07]

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
35mm
Case Thickness
12.3mm
Lug Width
20mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
30m
Dial Color
Burgundy
Jewels
31j
Frequency
36,000 bph
Power Reserve
43 hours
Year
1985

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