LONGINES Ultra-Chron Box Edition L2.836.4.52.9 Serpenti The Open Link collection takes

The Open Link collection takes one step ahead in your fashion journey with Calvin Klein watches that stand for their classy yet playful designs

distinct and alluring

but perfect for speeding down the open road or cruising through daily life thanks to a more simple

denim blue hue

LONGINES Ultra-Chron Box Edition L2.836.4.52.9 Serpenti The Open Link collection takesThe Longines Ultra Chron takes its cues from the Ultra Chron Diver that the Swiss brand released in 1968. This model was powered by the Calibre 431 that introduced a dry lubrication patent as a solution to the fact that being more exposed to strain, high beating movements require more durable parts and better lubricants to deal with the added friction.