This document is an instruction manual for using Longines chronograph
The Longines L652 chronograph is a precise, automatic timepiece with a sapphire‑crystal case and water‑resistance. It displays hours, minutes, seconds, and date, and its chronograph function can time events up to 12 hours with a resolution of 1/5 second.
The watch features a three‑position crown for winding, date correction, and time setting. The small seconds hand can be stopped by pulling the crown to the extreme position. Water‑resistance should be checked during periodic service, especially after a shock.
| Power reserve | 40 hours |
|---|---|
| Water resistance | Water‑resistant |
| Crystal | Sapphire crystal |
| Chronograph measurement range | Up to 12 hours |
| Chronograph resolution | 1/5 second |
| Movement | Automatic Longines L652 |
The natural movements of your wrist automatically wind the chronograph; manual winding is only needed if the watch has not been worn for several days.
Pull the crown to the intermediate position, turn it backwards to change the date, then push the crown back in. Do not change the date between 20:00 and 01:00.
Pull the crown out to the extreme position; the small seconds hand will stop.
Water‑resistance should be verified during each periodic service, especially after the watch receives a shock.