Seiko Cal. 6631 - 227

Seiko 6631-227

The 6631-227 is a sought-after Solar piece from Seiko's golden era. Powered by the 6631 caliber with 21j jewels beating at 36,000 bph, it delivers a 67 hours power reserve. [seikata-wm-52e8c22604ed]

Also known as: Navigator

Specifications

Movement
Solar
Case Material
Titanium
Case Width
34mm
Case Thickness
12.8mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
120m
Dial Color
Black
Jewels
21j
Frequency
36,000 bph
Power Reserve
67 hours
Year
1966

Related Models

seikata-wm-52e8c22604ed