Seiko Cal. 6690 - 597

Seiko 6690-597

This Hand-Winding model from 1985 features a 42mm Two-Tone case. Powered by the 6690 caliber with 17j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-25dfc41c86ea]

Specifications

Movement
Hand-Winding
Case Material
Two-Tone
Case Width
42mm
Case Thickness
8.7mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
150m
Dial Color
Green
Jewels
17j
Frequency
21,600 bph
Power Reserve
36 hours
Year
1985

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seikata-wm-25dfc41c86ea