Introducció
This instruction manual provides essential information for the proper use and care of your Swatch Sistem51 SO30B400 automatic watch. The Sistem51 is a unique automatic mechanical watch, powered by the motion of your wrist, eliminating the need for a battery.
The Swatch Sistem51 SO30B400 is part of the SISTEM 51 collection, featuring a 51 mm round case made from biosourced materials. Its design includes a distinctive green seconds hand, a nod to the 1983 collection.

Imatge: Frontal view of the Swatch Sistem51 SO30B400 automatic watch, showcasing its black dial, white hour markers, and green-tipped seconds hand.
Configuració
Configuració de l'hora i la data
- Desenrosqueu la corona: The watch features a push/pull crown. Gently pull the crown outwards to the first or second position.
- Setting the Date (if applicable): If your model includes a date function, pull the crown to the first position and rotate it either clockwise or counter-clockwise to adjust the date. Avoid setting the date between 9 PM and 3 AM, as this can damage the movement.
- Configuració de l'hora: Pull the crown to the second position. Rotate the crown to move the hour and minute hands to the correct time. Ensure you account for AM/PM if setting the date.
- Premeu la corona: Once the time and date are set, push the crown back into its original position to secure it and ensure water resistance.
Enrotllant el rellotge
The Sistem51 is an automatic watch, meaning it is powered by the natural motion of your wrist. It does not require manual winding in the traditional sense, nor does it use a battery. To ensure it runs continuously:
- Wear the watch regularly. Consistent wrist movement will keep the mainspring wound.
- If the watch stops due to lack of wear, gently shake it side-to-side for about 30 seconds to initiate movement. Then, set the time as described above.
Operating Your Swatch Sistem51 Watch
Cronometratge
Your Swatch Sistem51 watch displays time using hour, minute, and seconds hands. The unique design of the Sistem51 allows for a view of the intricate mechanical movement through the transparent case back.

Imatge: Part posterior view of the Swatch Sistem51 SO30B400, revealing the automatic mechanical movement through its transparent case back.
Resistència a l'aigua
The Swatch Sistem51 SO30B400 is water-resistant up to 100 feet (30 meters). This means it is suitable for splashes, rain, and brief immersion in water, but it is not recommended for swimming, diving, or prolonged water activities. Ensure the crown is fully pushed in before any contact with water.
Manteniment i cura
Neteja del rellotge
- Netegeu el rellotge regularment amb un drap suau i sec per eliminar la pols i les taques.
- For more thorough cleaning, especially the biosourced strap, use a damp cloth with mild soap and water. Ensure the watch is completely dry before wearing.
- Avoid using harsh chemicals or abrasive materials, as these can damage the watch's finish and materials.
Emmagatzematge
When not wearing your watch, store it in a cool, dry place away from direct sunlight and extreme temperatures. While the Sistem51 is an automatic watch, prolonged periods of inactivity may cause it to stop. Simply shake it gently to restart.
Battery Information Clarification
The Swatch Sistem51 is an automatic mechanical watch and does not require a battery for its primary timekeeping function. It is powered by the movement of your wrist. Any mention of "batteries required" or "battery exchange" in general product listings typically refers to quartz watches. For your Sistem51, no battery replacement is needed.
Resolució de problemes
- Mira No Corrent: As an automatic watch, it needs motion to operate. If the watch has stopped, gently shake it for about 30 seconds to wind the mainspring. If it still doesn't run, ensure the crown is fully pushed in.
- Inexactitud horària: Automatic watches can have slight variations in timekeeping. If the watch is consistently running too fast or too slow, it may require adjustment by a professional watchmaker.
- Aigua dins del rellotge: If you notice condensation or water inside the watch, immediately take it to an authorized Swatch service center. Do not attempt to open the watch yourself.
Especificacions
| Nom del model | Sistem51 Biosourced Unisex Watch |
| Número de model | SO30B400 |
| Tipus de moviment | Automatic Mechanical (SISTEM 51) |
| Material de la caixa | Bioceramic |
| Mida de la caixa | 51 mm (round) |
| Resistència a l'aigua | 100 peus (30 metres) |
| Material de la corretja | Biosourced material |
| Departament | Unisex-adult |
| Pes aproximat | 1.55 unces |
Garantia i suport
Garantia del fabricant
Your Swatch Sistem51 SO30B400 watch comes with a Garantia internacional 2 anys from the manufacturer. This warranty covers manufacturing defects under normal use. Please refer to the warranty card included with your purchase for full terms and conditions.
Servei i reparacions
For any service, repairs, or warranty claims, please contact an authorized Swatch retail location or service center. While the Sistem51 is an automatic watch and does not require traditional battery changes, Swatch offers various services for their products. For specific service inquiries, please consult your local Swatch store or the official Swatch weblloc.





