Case material: Rose gold; Charge: Automatic; Conditions: New Presentation condition : With boxes and all papers; Model: Stranger Price on request Gmtbroker Reference: 6902-125 ulysse nardin takes watch collectors by surprise, once again, and this time it's with its new, in-house developed musical mechanical watch based on another ulysse nardin caliber, the un-690 using silicium technology. the first in this series of limited edition timepieces plays the melody "strangers in the night" - the legendary song made famous by frank sinatra in 1966. crooning about a chance romantic encounter, sinatra enthralled fans around the world; his velvety voice paired with these dreamy lyrics lives on, inspiring the possibility of love. limited edition of 99 pieces. also known as: un 6902-125, 6902125, ulysse nardin 6902-125