Seiko Cal. 3850 - 661

Seiko 3850-661

The Seiko 3850-661 represents an important milestone in Seiko's 1979 lineup. The Fixed bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-3cf98a173701]

Also known as: Sumo

Specifications

Movement
Spring Drive
Case Material
Two-Tone
Case Width
37mm
Case Thickness
9.4mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
120m
Dial Color
Navy
Jewels
28j
Frequency
21,600 bph
Power Reserve
53 hours
Year
1979

Related Models

seikata-wm-3cf98a173701