Seiko Cal. 6631 - 340

Seiko 6631-340

This Quartz model from 1993 features a 38mm Two-Tone case. Powered by the 6631 caliber with 18j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-e472c0817510]

Specifications

Movement
Quartz
Case Material
Two-Tone
Case Width
38mm
Case Thickness
14.5mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
180m
Dial Color
Black
Jewels
18j
Frequency
28,800 bph
Power Reserve
37 hours
Year
1993

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seikata-wm-e472c0817510