Seiko Cal. 7090 - 644

Seiko 7090-644

This Automatic model from 1977 features a 42mm PVD Black case. Powered by the 7090 caliber with 31j jewels beating at 28,800 bph, it delivers a 64 hours power reserve. [seikata-wm-98ca435e22b5]

Also known as: Baby Tuna

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
42mm
Case Thickness
9.7mm
Lug Width
20mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
140m
Dial Color
White
Jewels
31j
Frequency
28,800 bph
Power Reserve
64 hours
Year
1977

Related Models

seikata-wm-98ca435e22b5