Seiko Cal. 5660 - 646

Seiko 5660-646

The 5660-646 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5660 caliber with 36j jewels beating at 21,600 bph, it delivers a 49 hours power reserve. [seikata-wm-f597c1fc7c3d]

Also known as: Rally, Sportsmatic

Specifications

Movement
Hand-Winding
Case Material
Stainless Steel
Case Width
37mm
Case Thickness
9.7mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
190m
Dial Color
Blue Sunburst
Jewels
36j
Frequency
21,600 bph
Power Reserve
49 hours
Year
1997

Related Models

seikata-wm-f597c1fc7c3d