Seiko Cal. 4427 - 774

Seiko 4427-774

This Hand-Winding model from 1978 features a 41mm Hardlex-Coated Steel case. Powered by the 4427 caliber with 21j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-209d99543df3]

Also known as: Monster, Bullhead

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
41mm
Case Thickness
11.8mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
90m
Dial Color
Black
Jewels
21j
Frequency
21,600 bph
Power Reserve
55 hours
Year
1978

Related Models

seikata-wm-209d99543df3