====== Microtor ======
**Microtor** was the trademarked name used by [[Universal Geneve]] for their pioneering [[micro-rotor]] [[automatic winding]] system launched in [[1958]]. This was revived in a line of watches in [[2006]].

===== History =====
Universal Geneve and [[Büren]] simultaneously launched movements with [[micro-rotor]] [[automatic winding]] in [[1958]]. Both the Universal "Microtor" Cal. 1-69 and Büren "[[Super Slender]]" measured about 4.2 mm thick, but this nevertheless made them the [[thinnest]] automatic movements in the world. [[Piaget]] would definitively take the crown the following year with their 2.3 mm [[Piaget 12P|Cal. 12p]], however. Universal's new [[Universal Polerouter|Polerouter]] model was put to the test that year in a Greenland expedition by French and Swiss explorers.

In [[1966]], Universal introduced the Cal. 2-66, which measured just 2.5 mm thick. This narrowly bested the Büren [[Intramatic]] but could not beat Piaget. There is no evidence that Universal used the "Microtor" brand on this watch, though it is usually included under that name today.

Universal revived the "Microtor" movement in [[2006]], even recalling some retired watchmakers to help. The result was the Microtor UG100, a limited re-edition of the classic 2.5 mm Cal. 2-66 beating at 28,800 A/h. Cal. UG101 followed in [[2007]], updated for modern industrial production with 30 jewels and 44 hour power reserve.


{{tag>Terms Universal_Geneve}}