Longines Casual Watch L4.860.4.12.2 Instruction Manual

1. Introduction

This manual provides essential information for the proper use, setup, and maintenance of your Longines Casual Watch, model L4.860.4.12.2. Please read these instructions carefully to ensure optimal performance and longevity of your timepiece.

Longines is a renowned Swiss watch brand established in 1832, known for its tradition of elegance and performance in watchmaking.

2. Product Overview

Familiarize yourself with the key components of your Longines watch.

• Dial: The face of the watch displaying time and date.
• Hands: Hour, minute, and second hands for time indication.
• Crown: Used for setting time and date, and for manual winding.
• Case: The protective housing for the watch movement.
• Strap/Bracelet: Secures the watch to your wrist.
• Date Window: Displays the current date.

Figure 2.1: Front view of the Longines L4.860.4.12.2 watch. This image shows the white dial with silver hands and markers, the Longines logo, 'AUTOMATIC' text, and the date window at 3 o'clock. The watch is fitted with a black leather strap.

Figure 2.2: Side view of the watch, highlighting the crown. The crown is used for adjusting the time and date, and for manual winding.

Figure 2.3: Rear view of the watch, featuring a transparent case back that reveals the automatic mechanical movement. Engravings such as 'ALL STAINLESS STEEL', 'SWISS MADE', 'WATER-RESISTANT', and the model number are visible.

Figure 2.4: Close-up of the watch's buckle, featuring the Longines logo. This buckle secures the black leather strap.

3. Setup

3.1. Initial Winding

Your Longines watch is equipped with an automatic mechanical movement. If the watch has stopped, it requires initial winding to start. Gently turn the crown clockwise approximately 30-40 times while it is in its normal, pushed-in position. This will build up sufficient power reserve.

3.2. Setting the Time

1. Pull the crown out to position 2 (the outermost position). The second hand will stop.
2. Turn the crown clockwise or counter-clockwise to set the hour and minute hands to the desired time.
3. Push the crown back into position 0 (normal operating position) to restart the watch.

3.3. Setting the Date

Important: Avoid setting the date between 9 PM and 3 AM (21:00 and 03:00) as this can damage the movement. If you need to set the date during this period, first set the time outside this range, adjust the date, then reset the time.

1. Pull the crown out to position 1 (the first click).
2. Turn the crown clockwise to advance the date until the correct date is displayed.
3. Push the crown back into position 0.

3.4. Adjusting the Strap

The watch features a leather strap with a buckle. Adjust the strap by selecting the appropriate hole for a comfortable and secure fit on your wrist. Ensure the watch is not too tight, which can restrict circulation, or too loose, which can cause discomfort or damage.

4. Operating Your Watch

4.1. Automatic Movement

Your Longines watch is powered by an automatic mechanical movement. This means it winds itself through the natural motion of your wrist. When worn regularly (approximately 8-12 hours a day), the watch will maintain its power reserve. If the watch is not worn for an extended period, it will stop and require manual winding as described in Section 3.1.

4.2. Water Resistance

This watch is marked as 'WATER-RESISTANT'. This generally means it is suitable for everyday use and can withstand splashes, rain, and brief immersion in water. However, it is not designed for swimming, diving, or showering. Always ensure the crown is fully pushed in before any contact with water. Avoid operating the crown while the watch is wet.

Note: Water resistance is not a permanent characteristic and may decrease over time due to aging of gaskets or accidental shocks. It is recommended to have the water resistance checked periodically by an authorized service center.

5. Maintenance

5.1. Cleaning

To clean your watch, use a soft, dry cloth. For the case and metal parts, a slightly damp cloth can be used, followed by immediate drying. Avoid using chemical cleaning agents, as they can damage the watch's finish or seals. For the leather strap, avoid excessive moisture and harsh chemicals; clean with a specialized leather cleaner if necessary.

5.2. Storage

When not wearing your watch, store it in a cool, dry place, away from direct sunlight and extreme temperatures. The original watch box is ideal for storage. If storing for an extended period, consider a watch winder to keep the automatic movement running and lubricated.

5.3. Service Intervals

Like any precision instrument, your Longines watch requires periodic servicing to ensure its accuracy and longevity. It is recommended to have your watch serviced by an authorized Longines service center every 3 to 5 years. This service typically includes cleaning, lubrication, and adjustment of the movement, as well as replacement of worn gaskets.

5.4. Avoiding Magnetic Fields

Strong magnetic fields can affect the accuracy of mechanical watches. Keep your watch away from strong magnets, such as those found in speakers, refrigerators, and certain electronic devices.

6. Troubleshooting

• Watch not running: If the watch has stopped, manually wind it by turning the crown clockwise 30-40 times. If it still does not start, or stops shortly after, it may require servicing.
• Date not changing: Ensure the time is set correctly, especially the AM/PM cycle. The date typically changes around midnight. If the date is stuck, try manually advancing it using the crown (refer to Section 3.3).
• Inaccurate timekeeping: Minor variations in timekeeping are normal for mechanical watches. However, if the watch is consistently gaining or losing significant time, it may be magnetized or require adjustment/servicing.
• Condensation under crystal: If you notice condensation, it indicates a loss of water resistance. Immediately take the watch to an authorized service center to prevent further damage to the movement.

For issues not covered here, please contact an authorized Longines service center.

7. Specifications

8. Warranty and Support

Your Longines watch is covered by a manufacturer's warranty against manufacturing defects. Please refer to the warranty card provided with your purchase for specific terms, conditions, and duration of the warranty.

For warranty claims, repairs, or technical support, please contact an authorized Longines retailer or visit the official Longines website to locate a service center near you. Always ensure that any service or repair work is carried out by authorized personnel to maintain the integrity and warranty of your watch.

For further assistance, please visit: www.longines.com