Seiko Cal. 5644 - 378

Seiko 5644-378

This Hand-Winding model from 1982 features a 37mm Stainless Steel case. Powered by the 5644 caliber with 33j jewels beating at 36,000 bph, it delivers a 43 hours power reserve. [seikata-wm-73713694100f]

Specifications

Movement
Hand-Winding
Case Material
Stainless Steel
Case Width
37mm
Case Thickness
13.5mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
110m
Dial Color
Silver
Jewels
33j
Frequency
36,000 bph
Power Reserve
43 hours
Year
1982

Related Models

seikata-wm-73713694100f