LONGINES Ultra-Chron Box Edition L2.836.4.52.9 CK Citified reversible leather strap in plain

reversible leather strap in plain brown colour on one side and grainy black on the other

Thickness : 5

the watch can be seen through the sapphire crystal case back

based on the Sellita SW300-1

The true reflection of when expert craftsmanship and modern technology come together

LONGINES Ultra-Chron Box Edition L2.836.4.52.9 CK Citified reversible leather strap in plainThe 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.