Sonceboz ES 55

watch, watches, wristwatch, wristwatches, caliber, Switzerland


The diameter is 11 1/4 lignes and it beats with 21600 A/h. The balance runs in two shock protection systems with three legs; on the movement side with a jewel, on the dial side only with a steel plate. The balance drives a pin lever, the center second hand is directly driven while the cannon pinion is driven indirectly by the mainspring barrel.

Technical data

CaliberES 55
Number of jewels1
Escapementpin lever
Shock protection(s)Brac Dip Resomatic
Balance cock directionclockwise
Hairspring studmoveable
Regulator typeHairspring key
Movement constructionFork
Escapement wheel, Fourth wheel, Third wheel, Large driving wheel
Mainspring barrel
Winding mechanismyoke
Setting lever spring1 holes
FunctionsHour, minute, second
Beats per hour21600
Production time1978 - ?

Usage gallery