Seiko Cal. 3877 - 131

Seiko 3877-131

This Hand-Winding model from 1974 features a 45mm Hardlex-Coated Steel case. The Bidirectional bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-7f27419936fe]

Also known as: Helmet

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
45mm
Case Thickness
11.5mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
170m
Dial Color
Black
Jewels
23j
Frequency
36,000 bph
Power Reserve
64 hours
Year
1974

Related Models

seikata-wm-7f27419936fe