1. Introdución
The Gravity C25 Smartwatch is designed to enhance your daily life with advanced features for communication, health monitoring, and fitness tracking. This manual provides essential information to help you set up, operate, and maintain your device effectively.
The C25 features a 1.43-inch AMOLED display, Bluetooth calling, AI voice assistant, and over 100 sports modes. It is built with a rugged, 1 ATM waterproof design suitable for various environments.
2. Que hai na caixa
- Gravity C25 Smartwatch
- Cable de carga
- Manual de usuario
3. Configuración
3.1 Cargar o reloxo intelixente
Before first use, fully charge your Gravity C25 Smartwatch. Connect the magnetic charging cable to the charging contacts on the back of the watch and plug the USB end into a standard USB power adapter (not included).
The watch display will show the charging status. A full charge typically takes approximately 2 hours.
3.2 Acendido/Apagado
- Para acender: Press and hold the side power button until the Gravity logo appears.
- Para apagar: Press and hold the side power button, then select 'Power Off' on the screen.
3.3 Instalación e emparellamento da aplicación
The Gravity C25 Smartwatch uses the Da Fit app for full functionality and data synchronization.
- Descarga o Da Fit app from the Apple App Store (for iOS) or Google Play Store (for Android).
- Asegúrate de que o Bluetooth estea activado no teu smartphone.
- Open the Da Fit app, create an account or log in.
- Follow the in-app instructions to add your device. Select 'Add Device' and choose 'C25' from the list of available devices.
- Confirma a solicitude de emparellamento tanto no teu teléfono como no reloxo intelixente.

Imaxe: Máis deview of Gravity C25 features, including Da Fit app and Bluetooth connectivity.
4. Instrucións de funcionamento
4.1 Pantalla e navegación
The Gravity C25 features a 1.43-inch AMOLED HD screen with a resolution of 466x466 pixels. It supports an Always-On Display (AOD) mode.

Image: Close-up of the Gravity C25's 1.43-inch AMOLED HD screen, highlighting its clarity and data display.
- Pase o dedo cara abaixo: Acceder á configuración rápida (por exemplo, brillo, Non molestar, aforro de batería).
- Pasa o dedo cara arriba: View notificacións.
- Pase o dedo cara á esquerda/dereita: Navigate through widgets and main functions (e.g., activity, heart rate, weather).
- Toca: Selecciona un elemento ou abre unha aplicación.
- Botón lateral: Press to return to the watch face or access the app menu.
4.2 Cambiar as esferas do reloxo
You can customize your watch face directly on the device or through the Da Fit app.
- De vixilancia: From the main watch face, press and hold the screen. Swipe left or right to browse available watch faces and tap to select.
- A través da aplicación Da Fit: Open the app, go to 'Device' settings, and select 'Watch Faces' to explore more options and customize.

Image: A selection of customizable watch faces available for the Gravity C25 Smartwatch.
5. Seguimento da saúde e da condición física
The C25 Smartwatch offers comprehensive health and fitness monitoring features.
5.1 Monitorización da frecuencia cardíaca
The watch continuously monitors your heart rate throughout the day. View real-time data on the watch or detailed trends in the Da Fit app.
5.2 Blood Oxygen (SpO2) Monitoring
Measure your blood oxygen saturation levels. Ensure the watch is worn snugly on your wrist for accurate readings.
5.3 Seguimento do sono
O reloxo rexistra automaticamente os teus patróns de sono, incluíndo o sono profundo, o sono lixeiro e as horas de espertar.view your sleep data in the Da Fit app to understand your sleep quality.

Image: The Gravity C25 Smartwatch interface showing detailed sleep pattern analysis.
5.4 modos deportivos
The C25 supports over 100 sports modes, including running, cycling, swimming, and more. Select your activity from the sports menu to track duration, calories burned, and other relevant metrics.

Image: The Gravity C25 Smartwatch displaying smart blood oxygen monitoring and 24-hour heart rate tracking.
6. Funcións intelixentes
Chamadas Bluetooth 6.1
Once paired with your smartphone via Bluetooth, you can make and receive calls directly from your wrist. Ensure the Bluetooth call function is enabled in the Da Fit app settings.
Asistente de voz con IA 6.2
Activate the AI voice assistant on your watch to perform tasks hands-free, such as checking the weather, setting alarms, or initiating calls. Refer to the Da Fit app for specific voice commands and setup.
6.3 Notificacións
Receive notifications for calls, messages, and various apps directly on your smartwatch. Customize which app notifications you receive through the Da Fit app.
7. Durabilidade e resistencia á auga
The Gravity C25 is designed for rugged use, featuring 1 ATM water resistance, dustproof, and shockproof capabilities. It can withstand temperatures from -24°C to 60°C.

Image: The Gravity C25 Smartwatch demonstrating 1 ATM water resistance, anti-cold, and high-temperature resistance.
The 1 ATM water resistance rating means the watch is suitable for splashes, rain, and brief immersion in water, such as swimming in shallow water. It is not recommended for diving or high-pressure water activities.
8. Batería e carga
The C25 is equipped with a 410mAh battery, providing up to 25 days of standby time. Actual battery life may vary based on usage and settings.
To charge, use the provided magnetic charging cable. Ensure the charging contacts on the watch and cable are clean and dry before connecting.
9. Mantemento
9.1 Cleaning the Smartwatch
Regularly clean your smartwatch to prevent skin irritation and maintain optimal performance.
- Limpe a carcasa e a correa do reloxo cun pano suave eamp, pano sen pelusa.
- For stubborn dirt, use a small amount of mild soap and water, then rinse thoroughly and dry.
- Evite o uso de produtos químicos agresivos, produtos de limpeza abrasivos ou solventes.
9.2 Actualizacións de software
Periodically check the Da Fit app for available software updates. Updates can improve performance, add new features, and fix bugs. Ensure your watch is sufficiently charged before starting an update.
10 Solución de problemas
- O reloxo non se acende: Asegúrate de que o reloxo estea completamente cargado. Conéctao ao cargador durante polo menos 30 minutos.
- Non se pode emparellar co teléfono:
- Asegúrate de que o Bluetooth estea activado no teléfono e no reloxo.
- Asegúrate de que o reloxo estea dentro do alcance do teu teléfono.
- Reinicia tanto o teléfono como o reloxo intelixente.
- Borra a caché de Bluetooth no teu teléfono (Android) ou esquece o dispositivo e volve emparellalo (iOS).
- Datos sanitarios inexactos: Asegúrate de levar o reloxo ben axustado ao pulso, nin demasiado axustado nin demasiado solto. Limpa o sensor da parte traseira do reloxo.
- Non aparecen as notificacións: Check notification settings in the Da Fit app and your phone's system settings to ensure permissions are granted.
- A pantalla non responde: Try restarting the watch by pressing and holding the side button.
11. Especificacións
| Número de modelo | W4-C28 |
| Tamaño de visualización | 1.43 polgadas |
| Tipo de visualización | AMOLED |
| Capacidade da batería | 410 mAh |
| Resistencia á auga | 1 ATM |
| Conectividade | Bluetooth |
| Sistema Operativo | Android OS (compatible with iOS and Android) |
| Peso do elemento | 16 onzas |
| Resistencia á temperatura | -24°C a 60°C |
12. Garantía e soporte
For warranty information and customer support, please refer to the documentation provided with your purchase or contact Gravity customer service through their official websitio. Garda o comprobante de compra para reclamacións de garantía.