Seiko Cal. 3820 - 631

Seiko 3820-631

This Hand-Winding model from 1990 features a 42mm Stainless Steel case. Powered by the 3820 caliber with 22j jewels beating at 21,600 bph, it delivers a 42 hours power reserve. [seikata-wm-e3d5796bb9b2]

Specifications

Movement
Hand-Winding
Case Material
Stainless Steel
Case Width
42mm
Case Thickness
15.8mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
40m
Dial Color
Black
Jewels
22j
Frequency
21,600 bph
Power Reserve
42 hours
Year
1990

Related Models

seikata-wm-e3d5796bb9b2