Seiko Cal. 6637 - 699

Seiko 6637-699

This Automatic model from 1991 features a 42mm PVD Black case. Powered by the 6637 caliber with 18j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-975ea25b4980]

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
42mm
Case Thickness
14.8mm
Lug Width
22mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
100m
Dial Color
Burgundy
Jewels
18j
Frequency
36,000 bph
Power Reserve
52 hours
Year
1991

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seikata-wm-975ea25b4980