Seiko Cal. 6631 - 221

Seiko 6631-221

This Automatic model from 1995 features a 36mm Stainless Steel case. Powered by the 6631 caliber with 36j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-6b0ff3cd0258]

Specifications

Movement
Automatic
Case Material
Stainless Steel
Case Width
36mm
Case Thickness
8.4mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
50m
Dial Color
Cream
Jewels
36j
Frequency
21,600 bph
Power Reserve
40 hours
Year
1995

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