Seiko Cal. 6640 - 707

Seiko 6640-707

This Hand-Winding model from 1996 features a 34mm Titanium case. Powered by the 6640 caliber with 26j jewels beating at 36,000 bph, it delivers a 67 hours power reserve. [seikata-wm-40da8bc228d1]

Specifications

Movement
Hand-Winding
Case Material
Titanium
Case Width
34mm
Case Thickness
10.2mm
Lug Width
19mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
60m
Dial Color
Champagne
Jewels
26j
Frequency
36,000 bph
Power Reserve
67 hours
Year
1996

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seikata-wm-40da8bc228d1