Seiko Cal. 3850 - 912

Seiko 3850-912

This Hand-Winding model from 1972 features a 40mm Two-Tone case. The Bidirectional bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-33b7ef51c13a]

Also known as: Monster, Tuna

Specifications

Movement
Hand-Winding
Case Material
Two-Tone
Case Width
40mm
Case Thickness
15.6mm
Lug Width
18mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
110m
Dial Color
Silver
Jewels
36j
Frequency
21,600 bph
Power Reserve
69 hours
Year
1972

Related Models

seikata-wm-33b7ef51c13a