Seiko Cal. 6657 - 446

Seiko 6657-446

The Seiko 6657-446 represents an important milestone in Seiko's 1968 lineup. Powered by the 6657 caliber with 30j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-c69deea9d7d3]

Also known as: Baby Tuna

Specifications

Movement
Kinetic
Case Material
PVD Black
Case Width
35mm
Case Thickness
10.9mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
150m
Dial Color
Cream
Jewels
30j
Frequency
21,600 bph
Power Reserve
53 hours
Year
1968

Related Models

seikata-wm-c69deea9d7d3