Indledning
This manual provides detailed instructions for the proper use and care of your Longines L2.673.4.78.6 Master Collection Chronograph Watch. Please read this guide thoroughly to ensure optimal performance and longevity of your timepiece.
Kom godt i gang
Udpakning og første inspektion
Carefully remove your watch from its packaging. Inspect the watch for any visible damage. Retain all packaging materials for future reference or transport.

Image: Longines L2.673.4.78.6 Master Collection Chronograph Watch. This image displays the watch with its silver dial and stainless steel bracelet.
At vikle bevægelsen
Your Longines L2.673.4.78.6 is an automatic mechanical watch. Before setting the time, ensure it has sufficient power reserve. To manually wind the watch, unscrew the crown (if applicable) and turn it clockwise approximately 30-40 times. The watch will also wind automatically with wrist movement.
Indstilling af tid og dato
- For at indstille tid, pull the crown out to position 3 (farthest out). Turn the crown to set the hour and minute hands. The seconds hand may stop, allowing for precise time setting.
- For at indstille dato, pull the crown out to position 2. Turn the crown clockwise or counter-clockwise to adjust the date. Avoid setting the date between 9 PM and 3 AM to prevent damage to the movement.
- After setting, push the crown back to position 1 (closed) and screw it in securely to ensure water resistance.
Justering af armbånd
For optimal comfort and security, the metal bracelet should fit snugly but not too tightly. Bracelet adjustment typically requires specialized tools and should be performed by a qualified watchmaker or an authorized Longines service center.
Betjening af dit ur
Krone funktioner
- Position 1 (Pushed In/Screwed Down): Normal operating position, ensures water resistance. Manual winding (if unscrewed and turned clockwise).
- Position 2 (Pulled Out One Click): Date adjustment.
- Position 3 (Pulled Out Two Clicks): Time adjustment (seconds hand may stop for precise setting).
Kronograffunktioner
Your watch features a chronograph for measuring elapsed time.
- Start/Stop: Press the upper pusher (A) to start the chronograph. Press it again to stop the measurement.
- Nulstil: After stopping the chronograph, press the lower pusher (B) to reset all chronograph hands to zero.
Reading the Dials
The main dial displays hours, minutes, and a small seconds hand (typically at 9 o'clock). The chronograph features usually include a 30-minute counter (at 3 o'clock) and a 12-hour counter (at 6 o'clock).
Pleje og vedligeholdelse
Rensning
For at bevare dit urs udseende, skal du rengøre urkassen og metallænken regelmæssigt med en blød klud.amp cloth. For stubborn dirt, a mild soap solution can be used, ensuring the crown is fully screwed down. Rinse with clean water and dry thoroughly. Avoid using harsh chemicals.
Retninger for vandmodstand
Your Longines L2.673.4.78.6 watch has a specific water resistance rating. Refer to the case back for the exact rating (e.g., 30m, 50m, 100m). Ensure the crown is always fully pushed in and screwed down before any contact with water. Water resistance is not a permanent characteristic and may decrease over time due to aging gaskets or accidental impacts. It is recommended to have the water resistance checked annually by an authorized service center.
Regelmæssig servicering
Like any precision instrument, your mechanical watch requires periodic servicing to ensure its accuracy and longevity. Longines recommends a complete service every 3 to 5 years, depending on usage and environmental conditions. This service includes cleaning, lubrication, and adjustment of the movement, as well as replacement of worn components and gaskets.
Opbevaring
When not wearing your watch, store it in a dry, cool place, away from direct sunlight, extreme temperatures, and strong magnetic fields. If storing for an extended period, consider a watch winder to keep the automatic movement running.
Fejlfinding
- Uret kører ikke: If the watch stops, manually wind it by turning the crown clockwise 30-40 times. If it still does not run, it may require servicing.
- Time Inaccuracy: Slight variations in timekeeping are normal for mechanical watches. If the watch is consistently gaining or losing significant time, it may need adjustment or servicing.
- Kronografviserne nulstilles ikke: If the chronograph hands do not return precisely to zero after pressing the reset pusher, the movement may require adjustment by a qualified watchmaker.
- Condensation Under Crystal: The presence of condensation under the crystal indicates a loss of water resistance. Immediately take the watch to an authorized service center to prevent further damage to the movement.
Specifikationer
- Varemodelnummer: L2.673.4.78.6
- Afdeling: Mænd
- Fabrikant: Longines
- Pakkedimensioner: 7.4 x 5.7 x 4.9 tommer; 3.25 pund
- Dato først tilgængelig: 19. oktober 2012
Garanti og service
Your Longines watch is covered by a manufacturer's warranty against defects in materials and workmanship. For warranty details, service requests, or technical support, please refer to the official Longines website or contact an authorized Longines service center.





