Seiko Cal. 6131 - 660

Seiko 6131-660

The 6131-660 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6131 caliber with 33j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-6a4408d7cb67]

Also known as: Monster

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
40mm
Case Thickness
12.6mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
200m
Dial Color
Champagne
Jewels
33j
Frequency
36,000 bph
Power Reserve
49 hours
Year
1980

Related Models

seikata-wm-6a4408d7cb67