Indledning
This manual provides comprehensive instructions for the Gravity C28 Rugged Smartwatch. Please read this manual carefully before using the device to ensure proper operation and maintenance. Keep this manual for future reference.
The Gravity C28 is designed for durability and advanced functionality, featuring a 2.02-inch TFT high-resolution display, AI-generated watch faces, and over 100 sports modes. It includes health monitoring features such as heart rate and sleep tracking, Bluetooth calling, and smart notifications. The smartwatch is built to withstand various environments with its 1 ATM waterproof, shockproof, and dustproof design.
Hvad er der i æsken
- Gravity C28 Smartwatch
- Ladekabel
- Brugervejledning (dette dokument)
The product package includes the Gravity C28 Smartwatch and its essential accessories for charging and initial setup.
Produkt overview

Figur 1: Front view of the Gravity C28 Smartwatch, showcasing its rugged design and digital display with time, date, and health metrics.

Figur 2: Overview of key features including 2.02-inch HD screen, cutting-edge design, powerful battery, 10-meter waterproof rating, professional health management, and 100+ sport modes.
Opsætning
1. Opladning af enheden
Before first use, fully charge your Gravity C28 Smartwatch. Connect the magnetic charging cable to the charging points on the back of the watch and plug the USB end into a power adapter (not included) or a computer's USB port.

Figur 3: Close-up of the Gravity C28 Smartwatch's rear, showing the magnetic charging contacts and heart rate sensor. The watch easily attaches to the charging dock via strong magnetic force for secure and convenient charging.

Figur 4: The Gravity C28 Smartwatch highlighting its 410mAh battery, providing long-lasting endurance for worry-free travel.
- Ensure the charging contacts on the watch and cable are clean and dry.
- En fuld opladning tager typisk cirka 2 timer.
- The watch has a 410mAh battery, providing up to 25 days of standby time.
2. Downloading the Da Fit App
The Gravity C28 Smartwatch requires the "Da Fit" application for full functionality and synchronization with your smartphone.
- Scan the QR code provided in the quick start guide or search for "Da Fit" in your smartphone's app store (Google Play Store for Android, Apple App Store for iOS).
- Download og installer applikationen.
3. Parring med din smartphone
- Sørg for, at Bluetooth er aktiveret på din smartphone.
- Åbn "Da Fit"-appen.
- Follow the on-screen instructions to add your device. The app will search for available smartwatches. Select "Gravity C28" from the list.
- Bekræft parringsanmodningen på både din telefon og smartwatchet.
Note: For optimal performance, ensure the Da Fit app has necessary permissions enabled (e.g., location, notifications, background refresh).
Betjeningsvejledning
Grundlæggende navigation
- Power knap: Tryk og hold nede for at tænde/slukke. Tryk kort for at vende tilbage til urskiven eller vække skærmen.
- Menu-knap: Short press to access the main menu.
- Sport knap: Kort tryk for hurtigt at få adgang til sportstilstande.
- Berøringsskærmbevægelser:
- Stryg op: View meddelelser.
- Swipe down: Access quick settings.
- Swipe left/right: Navigate through widgets (e.g., activity, heart rate, weather).
- Tap: Select an item or open an application.

Figur 5: Illustration of various menu display modes available on the Gravity C28 Smartwatch, including Grid View, Surface, Parallel, and Helm, allowing for flexible switching.
Sundhedsovervågning
The Gravity C28 provides comprehensive health tracking features:
- Heart Rate Monitoring: Real-time heart rate tracking throughout the day. Access the heart rate widget or app on the watch for detailed data.
- Søvnovervågning: Sporer automatisk dine søvnmønstre, herunder dyb søvn, let søvn og vågentidspunkter. View sleep data in the Da Fit app.
- Blodilt (SpO2): Mål dine iltmætningsniveauer i blodet.
- Blodtryk: Provides an estimate of blood pressure. For medical accuracy, consult a healthcare professional.
- Stressovervågning: Tracks stress levels based on heart rate variability.
- Aktivitetssporing: Registrerer skridt, distance og forbrændte kalorier.

Figur 6: Display of various health tracking metrics available on the Gravity C28, including heart rate, SpO2, blood pressure, stress levels, sleep patterns, and cycle tracking.
Sportstilstande
With over 100 sports modes, the Gravity C28 can accurately track various physical activities. To start a workout:
- Press the Sport button or navigate to the Sports app from the main menu.
- Vælg din ønskede aktivitet (f.eks. løb, cykling, svømning).
- Tap to start the activity. The watch will display real-time metrics such as duration, heart rate, and calories.
- To end the activity, swipe right or press the power button and select "End".

Figur 7: The Gravity C28 Smartwatch being used during snorkeling, illustrating its 1 ATM waterproof capability suitable for various water activities like daily cleaning, sweating, and rain exposure.
Bluetooth Calling & Notifications
The smartwatch supports Bluetooth calling and smart notifications:
- Bluetooth-opkald: Once paired, you can answer incoming calls directly from your wrist. The watch has a built-in microphone and speaker.
- Smarte meddelelser: Receive alerts for calls, messages, and social media apps (e.g., WhatsApp, Facebook) directly on your watch. Configure notification settings within the Da Fit app.

Figur 8: Two Gravity C28 smartwatches demonstrating the Bluetooth call and message alert functionality, showing an incoming call screen.
Tilpasning
- Se ansigter: Change watch faces directly on the device or through the Da Fit app. The app offers a wide selection and supports AI-generated watch faces for personalization.
- Menustil: The watch supports various menu display modes (e.g., Grid View, List View) which can be changed in settings.

Figur 9: Explanation of the DA GPT and AI Watch Face features, showing how users can interact with DA GPT for new ideas and conveniently change watch faces, including generating images from text prompts.
Vedligeholdelse og pleje
- Rensning: Rengør regelmæssigt dit smartwatch og din rem med en blød klud.amp klæde. Undgå at bruge skrappe kemikalier eller slibende materialer.
- Vandtæthed: The Gravity C28 is 1 ATM waterproof. It is suitable for daily use, hand washing, rain, and shallow water activities like swimming. Do not use it for diving or high-pressure water activities. Avoid hot water or steam.
- Temperatur: The watch is designed to withstand temperatures from -24°C to 60°C. Avoid exposing it to extreme temperatures outside this range.
- Opladning: Always ensure the charging contacts are dry before charging to prevent corrosion.
- Opbevaring: Når uret ikke er i brug i længere perioder, skal det opbevares køligt og tørt. Oplad det med jævne mellemrum for at opretholde batteriets sundhedstilstand.
Fejlfinding
| Problem | Mulig årsag | Løsning |
|---|---|---|
| Uret tænder ikke | Lavt batteri; Enheden er frosset | Charge the watch for at least 30 minutes. If still unresponsive, press and hold the power button for 10-15 seconds to force restart. |
| Kan ikke parres med telefonen | Bluetooth off; App not running; Watch not discoverable; Interference | Ensure Bluetooth is on. Restart both watch and phone. Make sure the Da Fit app is open. Forget previous pairings on phone. Try pairing in a different location. |
| Unøjagtige sundhedsdata | Improper fit; Sensor obstruction; Movement during measurement | Ensure the watch is snug but comfortable on your wrist. Clean the sensor on the back of the watch. Remain still during measurements. |
| Notifikationer ikke modtaget | App permissions; Notification settings; Bluetooth disconnected | Check Da Fit app permissions for notifications. Verify notification settings within the app. Ensure Bluetooth connection is stable. |
| Kort batterilevetid | Frequent use of features; High screen brightness; AOD mode enabled | Reduce screen brightness. Limit continuous heart rate monitoring. Disable Always-On Display (AOD) if not needed. Close unused apps on the watch. |
Specifikationer
| Feature | Detalje |
|---|---|
| Modelnummer | W4-C28 |
| Vise | 2.02-tommer TFT-skærm med en opløsning på 320x390 |
| Batterikapacitet | 410 mAh |
| Batterilevetid (Standby) | Op til 25 dage |
| Vandmodstand | 1 ATM (Waterproof, Shockproof, Dustproof) |
| Driftstemperatur | -24°C til 60°C |
| Forbindelse | Bluetooth |
| Kompatibilitet | Android OS, iOS (via Da Fit app) |
| Sundhedsovervågning | Heart Rate, Sleep, SpO2, Blood Pressure, Stress, Activity |
| Sportstilstande | 100+ |
| Varens vægt | 1 pund |
| Pakkedimensioner | 9 x 4 x 1 tommer |
Garanti og support
Gravity provides a standard manufacturer's warranty for the C28 Smartwatch against defects in materials and workmanship under normal use. Please refer to the warranty card included with your product or visit the official Gravity webhjemmeside for detaljerede garantivilkår.
For technical support, troubleshooting assistance, or warranty claims, please contact Gravity customer service through their official webwebstedet eller kontaktoplysningerne på din produktemballage.
Online ressourcer:
- Official Gravity Webwebsted: www.gravity.com
- Da Fit App Support: Refer to the help section within the Da Fit application.





