1. Introduzione
Thank you for choosing the SEIKO Prospex Speedtimer Solar Chronograph SSC913. This timepiece combines precision engineering with a stylish design, featuring a blue dial with a sunray finish and red accents. Powered by light energy, it offers reliable performance without the need for battery changes. This manual provides essential information for the proper setup, operation, and maintenance of your watch.

Immagine 1.1: Davanti view of the SEIKO Prospex Speedtimer Solar Chronograph SSC913, showcasing its blue sunray dial, chronograph subdials, and stainless steel bracelet.
2. Configurazione iniziale e ricarica
2.1 Addebito iniziale
Your SEIKO Prospex Speedtimer is powered by light energy. Upon receiving your watch, ensure it is exposed to sufficient light to begin charging. A full charge provides approximately 6 months of power reserve. Place the watch in direct sunlight or under strong artificial light for several hours to ensure it is adequately charged before initial use.
2.2 Impostazione dell'ora e della data
- Estrarre la corona: Estrarre delicatamente la corona fino al secondo scatto. La lancetta dei secondi si fermerà.
- Imposta l'ora: Turn the crown to set the hour and minute hands. Ensure the 24-hour hand is also set correctly (e.g., if it's 3 PM, set the 24-hour hand to 15).
- Imposta la data: Push the crown back to the first click position. Turn the crown to adjust the date. Avoid setting the date between 9 PM and 1 AM to prevent damage to the movement.
- Spingere la corona: Una volta impostati l'ora e la data, riportare la corona nella posizione normale. La lancetta dei secondi riprenderà a muoversi.

Immagine 2.1: Lato profile of the watch, highlighting the crown and chronograph pushers for time and function adjustments.
3. Operating Your Chronograph
The chronograph function allows for precise time measurement up to 60 minutes in 1/5 second increments.
3.1 Avvio e arresto del cronografo
- Premere il pulsante superiore (A) per avviare il cronografo. La lancetta dei secondi del cronografo inizierà a muoversi.
- Press the upper pusher (A) again to stop the chronograph. The elapsed time will be indicated by the chronograph second hand and minute hand.
3.2 Reimpostazione del cronografo
- After stopping the chronograph, press the lower pusher (B) to reset it. All chronograph hands will return to their zero positions.
3.3 Funzione tachimetro
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 distance. When the unit distance is completed, stop the chronograph. The number on the tachymeter scale indicated by the chronograph second hand is the average speed per hour.
4. Cura e manutenzione
4.1 Resistenza all'acqua
Your watch is water resistant to 10 bar (100 meters / 330 feet). This means it is suitable for swimming and snorkeling, but not for scuba diving. Always ensure the crown is pushed in completely before exposing the watch to water.
4.2 Pulizia
Wipe the watch case and bracelet regularly with a soft, dry cloth to remove dirt and moisture. For stubborn dirt, use a soft brush with mild soap and water, then rinse thoroughly and dry. Avoid using harsh chemicals or abrasive materials.
4.3 Cura dei cristalli
The watch features a curved sapphire crystal with an anti-reflective coating on the inner surface. Sapphire is highly scratch-resistant but not entirely scratch-proof. Avoid impacts and contact with hard surfaces to maintain its pristine condition.
4.4 LumiBrite
The hands and markers are coated with LumiBrite, a luminous paint that absorbs light energy and emits it in the dark. For optimal glow, expose the watch to bright light for a few minutes before entering a dark environment.

Immagine 4.1: The SEIKO Prospex Speedtimer SSC913 displayed in a lifestyle setting, emphasizing its versatility for daily wear.
5. Risoluzione Dei Problemi
5.1 Watch Not Running or Stopping
- Carica insufficiente: Ensure the watch is exposed to sufficient light for several hours to fully charge the solar cell.
- Posizione della corona: Check that the crown is pushed in completely to the normal position.
5.2 Chronograph Hands Not Resetting to Zero
- Procedura di ripristino: Ensure you are following the correct reset procedure (press the lower pusher B after stopping the chronograph). If hands are misaligned, refer to the detailed manual for specific calibration steps.
5.3 La data non cambia correttamente
- Regolazione del fuso orario: Ensure the time is set correctly, especially the AM/PM distinction, as this affects the date change.
- Regolazione manuale: If the date is stuck, manually advance the date using the crown (first click position) until it is correct.
6. Specifiche
| Numero di modello | SSC913 |
| Movimento | Solar Quartz (Caliber V192) |
| Materiale della cassa | Acciaio inossidabile |
| Diametro della cassa | 41.4 millimetri |
| Spessore della cassa | 13 millimetri |
| Case Length (Lug-to-Lug) | 45.9 millimetri |
| Larghezza ansa | 21 millimetri |
| Cristallo | Curved Sapphire Crystal |
| Colore del quadrante | Blue with Sunray Finish |
| Materiale luminoso | LumiBrite su lancette e pennarelli |
| Tipo di chiusura | Tri-Fold Push Button Release Clasp |
| Resistenza all'acqua | 10 bar (100 metri / 330 piedi) |
| Riserva di carica | Approx. 6 months (once fully charged) |
| Funzioni | Chronograph (up to 60 min in 1/5 sec increments), 24-hour hand, Date display, Overcharge prevention function |

Immagine 6.1: Posteriore view of the watch, detailing the stainless steel caseback and the secure tri-fold push-button release clasp.
7. Garanzia e supporto
For detailed warranty information, please refer to the warranty card included with your purchase. SEIKO offers comprehensive customer support for all its products. If you encounter any issues or require assistance, please contact SEIKO customer service or an authorized service center.
Puoi trovare maggiori informazioni e supporto sul sito ufficiale Negozio SEIKO.





