Seiko Cal. 6631 - 751

Seiko 6631-751

The 6631-751 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6631 caliber with 24j jewels beating at 21,600 bph, it delivers a 62 hours power reserve. [seikata-wm-01fc90d7a644]

Also known as: Samurai, Bullhead

Specifications

Movement
Automatic
Case Material
Gold-Plated
Case Width
41mm
Case Thickness
9.7mm
Lug Width
21mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
190m
Dial Color
White
Jewels
24j
Frequency
21,600 bph
Power Reserve
62 hours
Year
1966

Related Models

seikata-wm-01fc90d7a644