This document serves as an instruction manual for a Longines watch, providing essential information for its proper use, maintenance, and understanding of its warranty.
Function Description
The Longines watch is a timepiece designed for accurate timekeeping, displaying hours, minutes, and seconds. Many models also feature a date window. It is a precision instrument, reflecting Longines' long-established know-how, research, technical excellence, and timeless elegance. The watch is intended to be worn on the wrist and provides a reliable means of tracking time.
Usage Features
The manual outlines several key usage features to ensure the watch operates correctly and maintains its longevity.
- Setting the Time: To set the time, the crown is pulled out to position 3. The seconds hand, typically located at 6 o'clock, will stop at 60. The user can then turn the crown in either direction to adjust the hour and minute hands to the desired time. Once the time is synchronized, the crown should be pushed back into position 1.
- Quick Date Correction: For models with a date display, the date can be corrected by pulling the crown out to position 2 and turning it forwards. This action corrects the date without stopping the watch, meaning the time does not need to be reset. Date correction is necessary after any month with fewer than 31 days. After correcting the date, the crown must be pushed back into position 1. The date changes automatically when the hour hand passes midnight.
- Screw-in Crown: Some Longines models are equipped with a screw-in crown. Before setting the time, correcting the date, or winding the watch, this crown must be unscrewed. After performing the desired adjustment, the crown should be returned to position 1, pushed back in, and firmly screwed down. This action is crucial for ensuring the watch's water-resistance.
- Water-Resistance: The watch's water-resistance is a critical feature, and the manual provides detailed information on different levels of water-resistance, indicated by markings on the case-back.
- None: Indicates the watch is not water-resistant.
- 3 bar (30 m): Water-resistant up to an overpressure of 3 bar, suitable for everyday use and splashes but not for swimming.
- 5 bar (50 m): Water-resistant up to an overpressure of 5 bar, suitable for showering and light swimming.
- 10 bar (100 m): Water-resistant up to an overpressure of 10 bar, suitable for swimming and snorkeling.
- 30 bar (300 m): Water-resistant up to an overpressure of 30 bar, suitable for high-impact water sports and diving.
It is explicitly stated that the time-setting crown and/or push-pieces should never be activated when the watch is underwater. Furthermore, the crown and push-pieces must be pushed in or screwed down before any immersion in water to maintain water-resistance.
Maintenance Features
Proper maintenance is essential for the longevity and performance of a Longines watch. The manual provides several guidelines:
- Water-Resistance Checks: The watch's water-resistance can be compromised over time due to factors like drying gaskets or accidental shocks to the crown. To help maintain water-resistance, it is recommended to rinse the watch in soft water after any contact with sea water. More importantly, its water-resistance should be checked once a year by an approved Longines Service Centre. Users are explicitly warned against opening the watch themselves.
- Professional Servicing: For any servicing needs, including repairs or water-resistance checks, the watch should be entrusted to an official Longines dealer or an approved Longines Service Centre. These centers are guaranteed to comply with the standards of La Compagnie des Montres Longines, Francillon S.A., ensuring the watch is perfectly maintained.
- Warranty Coverage: The Longines international warranty covers defects in materials and manufacturing existing at the time of delivery. For all Longines watch models, a twenty-four (24) month warranty is provided from the purchase date. Automatic watches purchased from January 1, 2021, benefit from a five (5) year warranty. Watch straps and bracelets are covered by a 24-month international warranty for material or manufacturing defects. The warranty is valid only with a dated and fully completed warranty certificate from an official Longines dealer. During the warranty term, any covered defect will be repaired free of charge. If a repair cannot restore the watch to full working order, Longines undertakes to replace it with an identical or similar model. The replacement watch's warranty expires on the same date as the original.
- Exclusions from Warranty: The warranty does not cover:
- Battery life.
- Normal wear and tear, such as scratches on the case or glass, alteration of color or material of cases, straps, bracelets, and chains made of leather, textile, rubber, or other non-metallic materials, PVD coating, or the color of bronze.
- Damage resulting from unsuitable/improper use, neglect, carelessness, accidents (knocks, dents, crushing, scratches during strap/bracelet changes), incorrect use, or failure to follow the instruction manual.
- Harm resulting directly or indirectly from using the watch, operational failure, defect, or lack of precision.
- Watches handled by non-approved personnel (e.g., for battery replacement, servicing, or repairs) or altered from their original state without supervision from Longines.
- Battery Warning: The manual includes a critical warning regarding button cell or coin batteries, emphasizing the ingestion hazard. Ingested batteries can cause severe internal chemical burns in as little as 2 hours, potentially leading to death or serious injury. Users are instructed to keep new and used batteries out of reach of children and to seek immediate medical attention if a battery is suspected to have been swallowed or inserted into any part of the body. Used batteries must be removed and immediately recycled or disposed of according to local regulations, not in household trash or incinerated. Even used batteries can cause severe injury or death. The battery type and nominal voltage are specified (317-321-335-346-364-371-373-377-379 / 1.55 V). Non-rechargeable batteries are not to be recharged. Users are warned not to force discharge, recharge, disassemble, heat above the manufacturer's specified temperature rating, or incinerate batteries, as this can result in injury due to venting, leakage, or explosion causing chemical burns. The product contains a battery that is not intended to be replaceable by the user.
The manual also directs users to the Longines website (www.longines.com/instruction-manual) for more detailed information, tutorials, and specific instruction manuals for watches with complications, accessible via a QR code on the warranty card or in the manual itself.
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