Seiko Cal. 6171 - 731

Seiko 6171-731

This Spring Drive model from 1977 features a 35mm Hardlex-Coated Steel case. Powered by the 6171 caliber with 26j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-971f300c2079]

Also known as: Turtle, Baby Tuna

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
35mm
Case Thickness
15.4mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
50m
Dial Color
Blue Sunburst
Jewels
26j
Frequency
21,600 bph
Power Reserve
37 hours
Year
1977

Related Models

seikata-wm-971f300c2079