Seiko Cal. 6171 - 721

Seiko 6171-721

This Spring Drive model from 1979 features a 45mm Titanium case. Powered by the 6171 caliber with 18j jewels beating at 21,600 bph, it delivers a 72 hours power reserve. [seikata-wm-0fc901b873d4]

Also known as: Samurai, Baby Tuna

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
45mm
Case Thickness
9.5mm
Lug Width
18mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
150m
Dial Color
Silver
Jewels
18j
Frequency
21,600 bph
Power Reserve
72 hours
Year
1979

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