Seiko Cal. 6661 - 610

Seiko 6661-610

The 6661-610 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6661 caliber with 29j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-a050e81e0c9b]

Also known as: Monster, Arnie

Specifications

Movement
Spring Drive
Case Material
Two-Tone
Case Width
45mm
Case Thickness
12.3mm
Lug Width
20mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
110m
Dial Color
Green
Jewels
29j
Frequency
21,600 bph
Power Reserve
55 hours
Year
1993

Related Models

seikata-wm-a050e81e0c9b