Seiko Cal. 6631 - 860

Seiko 6631-860

The 6631-860 is a sought-after Solar piece from Seiko's golden era. Powered by the 6631 caliber with 22j jewels beating at 36,000 bph, it delivers a 60 hours power reserve. [seikata-wm-0b202fbb5e9e]

Also known as: Tuna, Sea Horse

Specifications

Movement
Solar
Case Material
PVD Black
Case Width
41mm
Case Thickness
9.7mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
70m
Dial Color
Silver
Jewels
22j
Frequency
36,000 bph
Power Reserve
60 hours
Year
1976

Related Models

seikata-wm-0b202fbb5e9e