Diver Chornometer

Ulysse Nardin in-house manufactured caliber UN-118 features, beats at 28,800 vph, contains 50 jewels and has an approximate power reserve of 60 hours. The movement features a anchor escapement which is produced using DIAMonSIL, Ulysse Nardin’s revolutionary alliance of diamond and silicon. DIAMonSIL is silicon treated with a thin layer of diamond coating that not only eliminates the need for lubrication, but also significantly increases the part’s durability. Ulysse Nardin's patented silicon hairspring & in-house produced oscillator with 4 correction screws. Rotor features 2 anchors as part of the rotor design & a medallion made of DIAMonSIL with the UN logo.