Seiko Cal. 5661 - 661

Seiko 5661-661

This Hand-Winding model from 1973 features a 37mm Two-Tone case. The Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-ebca1b83d470]

Also known as: Baby Tuna

Specifications

Movement
Hand-Winding
Case Material
Two-Tone
Case Width
37mm
Case Thickness
8.3mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
190m
Dial Color
Burgundy
Jewels
23j
Frequency
36,000 bph
Power Reserve
59 hours
Year
1973

Related Models

seikata-wm-ebca1b83d470