Η Seiko εδινε την cal. 4L στην Soprod. Η ιδια η Seiko το εχει αρνηθει,αλλα ανεπισημα στελεχη της εταιριας το εχουν παραδεχθει,δηλαδη η Soprod A10 εχει βασιστει στην Seiko cal. 4L
http://www.soprod.ch/EN/Mecanique.htmSpecifications:
Soprod Alternance 10 (SOP A 10)
11 1/2 lines
Diameter: 25.60mm
Height: 3,60 mm without hand fitting
Base: 3 hands out of the center
Date window: 3 o`clock
Handling & corrections:
a) manual wind up possible
b) fast date correction
c) stop-second
25 jewels
Frequency 28.800 b/h
Power Reserve: about 42h
Winding: bi-directional
Adjusted: 4 positions
Additional cost:
COSC certification on request
Decoration on choice: circular grained, Geneva stripes, circular stripes
Finish on choice: Rhodium plating, gilt
p.s
Soprod A10,επιπεδο ΕΤΑ 2892