1. Introduction
Thank you for choosing the YEMA YMHF0102 Master Elements Quartz Watch. This manual provides essential information for the proper setup, operation, and maintenance of your timepiece. Please read these instructions carefully to ensure optimal performance and longevity of your watch.
2. Product Overview
The YEMA YMHF0102 Master Elements is an analog quartz watch featuring a robust design and chronograph functionality. It is designed for reliability and precision.

Figure 1: YEMA YMHF0102 Master Elements watch on a wrist.
Components:
- Crown: Used for setting time and date.
- Pushers (A & B): Used for operating the chronograph functions.
- Dial: Displays hours, minutes, seconds, and chronograph sub-dials.
- Hands: Hour, minute, second, and chronograph hands.
- Bezel: Rotating bezel for timing purposes.

Figure 2: YEMA watch packaging box.
3. Setup
3.1 Battery
Your YEMA YMHF0102 watch comes with one product-specific battery pre-installed. The watch is ready for use upon receipt.
3.2 Setting Time and Date
- Pull out the crown: Gently pull the crown (located on the right side of the watch case) to position 2 for date adjustment, or position 3 for time adjustment.
- Set the date (if applicable): If the crown is in position 2, rotate it clockwise or counter-clockwise to set the correct date.
- Set the time: If the crown is in position 3, rotate it to move the hour and minute hands to the desired time. Ensure to account for AM/PM if your watch has a 24-hour indicator or date change mechanism.
- Push the crown back: Once the time and date are set, push the crown firmly back into its original position (position 1) against the watch case to ensure water resistance and to start the watch movement.
4. Operating
4.1 Chronograph Function
Your YMHF0102 watch is equipped with a chronograph for measuring elapsed time.
- Start: Press Pusher A (top pusher) to start the chronograph. The chronograph second hand will begin to move.
- Stop: Press Pusher A again to stop the chronograph. The elapsed time will be indicated by the chronograph hands.
- Reset: After stopping the chronograph, press Pusher B (bottom pusher) to reset all chronograph hands to their zero positions.
4.2 Water Resistance
This watch has a water resistance depth of 990 feet (approximately 300 meters). This rating makes the watch suitable for professional marine activity and serious surface water sports, but not for saturation diving. Always ensure the crown is fully pushed in before exposing the watch to water.
5. Maintenance
5.1 Cleaning
To maintain the appearance of your watch, wipe the case and crystal with a soft, dry cloth. For water-resistant models, a slightly damp cloth can be used, followed by a dry cloth. Avoid using chemical cleaners or abrasive materials.
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 provides excellent protection.
5.3 Battery Replacement
When the battery needs replacement, it is recommended to have it done by an authorized YEMA service center or a qualified watchmaker to ensure proper sealing and maintain water resistance.
6. Troubleshooting
- Watch not running: Check if the crown is fully pushed in. If it is, the battery may need replacement.
- Incorrect time: Ensure the crown is fully pushed in after setting the time. If the time is consistently incorrect, the watch may require servicing.
- Chronograph hands not resetting to zero: This may indicate a need for chronograph hand calibration, which should be performed by a professional.
7. Specifications

Figure 3: Watch size comparison chart.
| Feature | Detail |
|---|---|
| Brand | YEMA |
| Model Number | YMHF0102 |
| Movement Type | Quartz |
| Display Type | Analog |
| Water Resistance Depth | 990 Feet (300 Meters) |
| Case Diameter | 49 Millimetres |
| Case Thickness | 14 Millimetres |
| Band Width | 26 Millimetres |
| Dial Color | Black |
| Band Color | Black |
| Crystal Type | Crystal |
| Battery | 1 Product Specific battery (included) |
| Package Dimensions | 11.94 x 11.68 x 10.16 cm |
| Item Weight | 362.87 g |
8. Warranty and Support
Your YEMA YMHF0102 Master Elements watch is covered by a manufacturer's warranty against defects in materials and workmanship. For specific warranty terms and conditions, please refer to the warranty card included with your purchase or visit the official YEMA website. For technical support or service inquiries, please contact YEMA customer service.
Please retain your proof of purchase for warranty claims.