1. Introducció
Thank you for choosing the Bulova 98B428 Racer Chronograph Watch. This manual provides detailed instructions for the proper setup, operation, and maintenance of your new timepiece. Please read this manual thoroughly to ensure optimal performance and longevity of your watch.
2. Producte acabatview
2.1 Característiques clau
- Moviment: Quars
- Visualització: Chronograph with 24-hour sub-dial
- Material de la caixa: Black-plated Stainless Steel
- Material de la corretja: Black Leather with Tang Buckle
- Cristall: Vidre de safir
- Resistència a l'aigua: 100 Meters (suitable for swimming and snorkeling, not diving)
- Funcions especials: Chronograph, Calendar (Date), Luminous Hands and Markers, Tachymeter
- Diàmetre de la caixa: 42 mm
- Gruix de la caixa: 13 mm
2.2 Components del rellotge
Familiarize yourself with the main components of your Bulova 98B428 watch:

Imatge: Davant view of the Bulova 98B428 Racer Chronograph Watch, showcasing the black dial with orange accents, chronograph sub-dials, and tachymeter scale.

Imatge: lateral view of the Bulova 98B428 watch, showing the crown and chronograph pushers on the right side of the case.

Imatge: posterior view of the Bulova 98B428 watch, displaying the stainless steel case back with engraved details such as water resistance and model number, and the black leather strap.
- Corona: S'utilitza per configurar l'hora i la data.
- Empenyedors (A i B): S'utilitza per fer funcionar les funcions del cronògraf.
- Marca: Main display with hour, minute, and second hands, sub-dials, and date window.
- Escala taquímetrica: Located on the outer bezel, used for measuring speed.
2.3 Components inclosos

Imatge: The Bulova 98B428 watch presented in its gift box, featuring a tire-tread inspired watch holder.
- Bulova 98B428 Racer Chronograph Watch
- Caixa de regal
- Informació de la garantia
3. Configuració
3.1 Configuració de l'hora
- Pull the crown out to position 2 (the furthest position). The second hand will stop.
- Turn the crown to set the hour and minute hands. Ensure the AM/PM is correctly set by observing the 24-hour sub-dial.
- Push the crown back to position 0 (normal position) to start the watch.
3.2 Configuració de la data
- Estireu la corona fins a la posició 1 (el primer clic).
- Turn the crown clockwise or counter-clockwise to set the date. Avoid setting the date between 9 PM and 3 AM, as this may interfere with the date change mechanism.
- Push the crown back to position 0 (normal position).
3.3 Chronograph Hand Zero Reset
If the chronograph hands (seconds, minutes) do not return to the zero position after resetting, they may need to be calibrated:
- Estireu la corona cap a la posició 2.
- Press pusher A (top pusher) repeatedly to advance the chronograph second hand to the 12 o'clock position.
- Press pusher B (bottom pusher) repeatedly to advance the chronograph minute hand to the 12 o'clock position.
- Once all chronograph hands are aligned to zero, push the crown back to position 0.
4. Instruccions de funcionament
4.1 Ús del cronògraf
La funció de cronògraf permet mesurar el temps transcorregut.
- Inici: Press pusher A to start the chronograph. The chronograph second hand will begin to move.
- Atura: Premeu el polsador A de nou per aturar el cronògraf. El temps transcorregut s'indicarà amb les agulles del cronògraf.
- Restablir: After stopping, press pusher B to reset all chronograph hands to their zero positions.
4.2 Using the Tachymeter
The tachymeter scale on the bezel can be used to measure speed over a known distance (e.g., 1 kilometer or 1 mile).
- Start the chronograph at the beginning of the measured distance.
- Stop the chronograph when you reach the end of the distance.
- The position of the chronograph second hand on the tachymeter scale indicates the average speed per hour. For example, if it takes 30 seconds to cover 1 unit of distance, the hand will point to 120 on the tachymeter scale, indicating a speed of 120 units per hour.
4.3 24-Hour Display
The small sub-dial typically located at the 3 o'clock position indicates the time in a 24-hour format, which is useful for distinguishing between AM and PM when setting the main time.
4.4 Luminous Features

Imatge: The Bulova 98B428 watch dial in darkness, showing the luminous hands and hour markers glowing brightly for visibility.
The hands and hour markers of your Bulova 98B428 watch are treated with a luminous material. After exposure to light, these elements will glow in the dark, providing visibility in low-light conditions. The intensity and duration of the glow depend on the exposure time and intensity of light.
5. Manteniment i cura
5.1 Resistència a l'aigua
Your Bulova 98B428 watch is water resistant to 100 meters (10 ATM). This means it is suitable for everyday use, swimming, and snorkeling. It is no suitable for high-impact water sports or scuba diving.
- Ensure the crown is always pushed in completely to maintain water resistance.
- No feu funcionar la corona ni els polsadors mentre el rellotge estigui mullat o submergit a l'aigua.
- Després de l'exposició a l'aigua salada, esbandiu el rellotge amb aigua neta i eixugueu-lo bé amb un drap suau.
5.2 Neteja del rellotge
Per mantenir l'aspecte del rellotge:
- Wipe the case and crystal with a soft, dry cloth regularly.
- Per a la brutícia tossuda, utilitzeu una mica damp cloth and mild soap, then wipe dry.
- Eviteu utilitzar productes químics agressius o materials abrasius, ja que poden danyar l'acabat del rellotge.
5.3 Durada i substitució de la bateria
Your watch is powered by a quartz movement, which uses a battery. The typical battery life is 2-3 years. When the battery needs replacement, it is recommended to take your watch to an authorized Bulova service center or a reputable watchmaker to ensure proper battery installation and maintenance of water resistance.
5.4 Leather Strap Care
The leather strap is susceptible to wear and tear. To prolong its life:
- Avoid prolonged exposure to direct sunlight, extreme temperatures, and moisture.
- Clean the strap with a soft, damp cloth and allow it to air dry naturally.
- Avoid contact with cosmetics, oils, and chemical products.
6. Solució De Problemes
| Problema | Causa possible | Solució |
|---|---|---|
| El rellotge s'atura o funciona de manera intermitent. | Bateria baixa. | Substituïu la bateria. |
| L'hora o la data són incorrectes. | Incorrectly set, or crown is not fully pushed in. | Refer to Section 3.1 and 3.2 to reset time and date. Ensure crown is in position 0. |
| Les agulles del cronògraf no es reinicien a zero. | Chronograph hands need calibration. | Refer to Section 3.3 for chronograph hand zero reset. |
| Apareix condensació sota el cristall. | Canvi de temperatura o entrada d'aigua. | Contact an authorized service center immediately. Do not attempt to open the watch. |
7. Especificacions
| Característica | Detall |
|---|---|
| Número de model | 98B428 |
| Tipus de moviment | Quars |
| Material de la caixa | Black-plated Stainless Steel |
| Diàmetre de la caixa | 42 mil·límetres |
| Gruix de la caixa | 13 mil·límetres |
| Material de cristall | Vidre de safir |
| Color del dial | Negre |
| Material de la corretja | Cuir |
| Color de la corretja | Negre |
| Amplada de la corretja | 21 mil·límetres |
| Tipus de tancament | Sivella Tang |
| Resistència a l'aigua | 100 metres (10 caixers automàtics) |
| Característiques especials | Chronograph, Luminous Hands/Markers, 24-Hour Display, Tachymeter, Date Display |
| Pes de l'article | 100 grams |
8. Garantia i Suport
8.1 Informació de la garantia
Your Bulova 98B428 watch comes with a limited warranty. Please refer to the warranty card included with your purchase for specific terms, conditions, and duration of coverage. The warranty typically covers manufacturing defects but does not cover normal wear and tear, accidental damage, or damage resulting from improper use.
8.2 Atenció al client
For any questions, service, or repair needs not covered in this manual, please contact an authorized Bulova service center or the retailer from whom you purchased the watch. Do not attempt to open or repair the watch yourself, as this may void the warranty and cause further damage.