Seiko Cal. 6634 - 780

Seiko 6634-780

This Quartz model from 1991 features a 42mm Two-Tone case. Powered by the 6634 caliber with 30j jewels beating at 28,800 bph, it delivers a 69 hours power reserve. [seikata-wm-b3d137ed5e2f]

Specifications

Movement
Quartz
Case Material
Two-Tone
Case Width
42mm
Case Thickness
11.4mm
Lug Width
19mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
200m
Dial Color
Cream
Jewels
30j
Frequency
28,800 bph
Power Reserve
69 hours
Year
1991

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