Seiko Cal. 6331 - 118

Seiko 6331-118

This Spring Drive model from 1968 features a 44mm Hardlex-Coated Steel case. Powered by the 6331 caliber with 26j jewels beating at 21,600 bph, it delivers a 65 hours power reserve. [seikata-wm-078b32df878c]

Also known as: Baby Tuna, Flighty

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
44mm
Case Thickness
12.7mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
110m
Dial Color
Navy
Jewels
26j
Frequency
21,600 bph
Power Reserve
65 hours
Year
1968

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