Setup, Compatibility & Care
To set the time and date, pull the crown to the appropriate positions—first position for date adjustment and second for time setting. Avoid changing the date between 9:00 PM and 3:00 AM to prevent damaging the internal date-change mechanism. As the watch is rated for 3 bar water resistance, it is splash-resistant but should be kept away from heavy rain or submersion. Clean the case and sapphire crystal periodically with a soft, lint-free microfiber cloth. If the watch loses significant time, consult a professional authorized Longines service center to maintain the mechanical movement.