Seiko Cal. 3890 - 722

Seiko 3890-722

This Automatic model from 1973 features a 45mm Titanium case. Powered by the 3890 caliber with 19j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-87807a96cfab]

Also known as: Tuna, Baby Tuna

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
45mm
Case Thickness
12.6mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
100m
Dial Color
Cream
Jewels
19j
Frequency
36,000 bph
Power Reserve
38 hours
Year
1973

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