1. Introduction
This manual provides detailed instructions for the Ddidbi P66D Smartwatch. It covers essential information regarding product setup, operation, maintenance, and troubleshooting to ensure optimal use of your device. The Ddidbi P66D Smartwatch features Bluetooth calling, a 1.85-inch HD display, 112 sport modes, and comprehensive health monitoring capabilities.

Figure 1.1: A general view of the Ddidbi Smartwatch showcasing its vibrant display and sleek design.
2. Setup Guide
2.1 Package Contents
Verify that your package contains the following items:
- Ddidbi P66D Smartwatch
- Two interchangeable straps (one sport, one regular)
- Charging cable
- User Manual (this document)

Figure 2.1: The Ddidbi Smartwatch comes with two interchangeable straps, allowing users to switch between a sporty and a casual look.
2.2 Charging the Device
Before initial use, fully charge your smartwatch. Connect the charging cable to the charging port on the back of the watch and to a standard USB power adapter (not included). A full charge typically provides approximately 7 days of daily use or 15 days in standby mode, thanks to its 280mAh battery.
2.3 App Installation and Device Pairing
To unlock the full functionality of your Ddidbi P66D Smartwatch, install the companion application on your smartphone. The watch is compatible with most smartphones running iOS 8.0 and later, or Android 4.4 and later.
- Download the App: Scan the QR code provided in the quick start guide (or search for the app name, usually mentioned in the packaging or quick start guide).
- Enable Bluetooth: Ensure Bluetooth is enabled on your smartphone.
- Open the App: Launch the installed application and follow the on-screen instructions to create an account or log in.
- Pair the Device: Within the app, navigate to the device pairing section. Select your Ddidbi P66D Smartwatch from the list of available devices. Confirm the pairing request on both your phone and the smartwatch if prompted.
Note: The smartwatch is not compatible with PCs, iPads, or tablets.
3. Operating Instructions
3.1 Basic Navigation
The Ddidbi P66D Smartwatch features a 1.85-inch HD full-touch color screen for intuitive interaction. Swipe across the screen to navigate through menus and functions. Use the physical button(s) on the side for power on/off, returning to the home screen, or accessing specific features as defined in the app settings.
3.2 Bluetooth Calling
Your smartwatch is equipped with built-in speakers and Bluetooth connectivity, allowing you to manage phone calls directly from your wrist.
- Making Calls: Access the dial pad or contact list on your watch to initiate calls.
- Receiving Calls: When a call comes in, the watch will vibrate and display caller information. You can answer or reject calls directly from the watch.
- Media Playback: The watch can also serve as a media player for your phone's audio.

Figure 3.2: The smartwatch allows for direct phone calls from your wrist, showing call details and interaction options.
3.3 Notifications
Receive information reminders and notifications from social media applications (e.g., Facebook, WhatsApp, Instagram, Twitter) directly on your wrist. Notifications are accompanied by vibrations to ensure you do not miss important alerts.
- Enabling Notifications: Configure which app notifications you wish to receive through the companion app on your smartphone.
- Viewing Notifications: Swipe on the watch face to access your notification center.
3.4 Customizing Watch Faces
Personalize your smartwatch display to match your style. The companion application offers over 100 personalized watch faces. You can also upload your favorite photos to create custom watch faces.

Figure 3.4: The 1.85-inch HD display offers sensitive touch control and high-definition image quality, with numerous customizable watch faces to choose from.
3.5 Sport Modes
The Ddidbi P66D Smartwatch supports 112 indoor and outdoor sport modes, including walking, running, cycling, rope skipping, basketball, and football. It records various exercise data to help you track and improve your fitness.
- Tracking Data: The watch records steps, heart rate, calories burned, and distance covered during your workouts.
- Health Report: Exercise data is compiled into a health report accessible via the companion app.

Figure 3.5: The smartwatch supports 112 sport modes, allowing users to track performance for activities such as running, cycling, basketball, and more.
3.6 Health Monitoring
The integrated high-performance optical sensor enables 24-hour real-time heart rate monitoring. The watch also automatically monitors your sleep status at night, providing a comprehensive analysis of your sleep quality.
- Heart Rate: Continuous monitoring provides insights into your cardiovascular health.
- Sleep Tracking: Tracks deep sleep, light sleep, and awake times to help you understand your sleep patterns.
- Data Analysis: The companion app provides weekly health analysis reports, offering insights and suggestions based on your physical condition and trends.
Important: The health data provided by this device is for reference purposes only and is not intended for medical use or diagnosis.

Figure 3.6: The watch monitors 24-hour activity including calories, activity time, distance, and step count, alongside detailed sleep tracking for deep, light, and awake periods.
3.7 Other Smart Features
The Ddidbi P66D Smartwatch includes several daily practical functions:
- Alarm Clock: Set alarms directly from the watch or through the app.
- Stopwatch & Timer: Useful for tracking activities or intervals.
- Music Control: Control music playback on your connected smartphone.
- Weather Forecast: Get real-time weather updates.
- Sedentary Reminder: Alerts you to move after periods of inactivity.
- Find Phone: Helps locate your smartphone if it's within Bluetooth range.
- Camera Control: Remotely trigger your smartphone's camera shutter.
4. Maintenance
4.1 Cleaning Your Smartwatch
Regularly clean your smartwatch and straps to maintain hygiene and performance. Use a soft, damp cloth to wipe the screen and body. For the straps, follow the manufacturer's recommendations for the specific material (silicone in this case). Avoid using harsh chemicals or abrasive materials.
4.2 Water Resistance (IP68)
The Ddidbi P66D Smartwatch features an IP68 waterproof rating, meaning it is resistant to dust and can withstand immersion in water up to 1.5 meters for a limited time. It is suitable for use in rainy conditions and during swimming. However, it is not recommended for hot showers, saunas, or diving, as steam and high pressure can compromise the seals.

Figure 4.2: The Ddidbi Smartwatch features IP68 water resistance, dustproof construction, and shockproof design for enhanced durability in various environments.
4.3 Battery Care
To prolong the lifespan of your smartwatch's 280mAh Lithium-polymer battery:
- Avoid extreme temperatures.
- Do not allow the battery to fully deplete frequently.
- Charge the device using the provided cable and a compatible low-power adapter.
4.4 Strap Replacement
The Ddidbi P66D Smartwatch comes with two interchangeable straps. Refer to the quick start guide or product packaging for specific instructions on how to safely remove and attach the straps. Ensure they are securely fastened before wearing the watch.
5. Troubleshooting
5.1 Device Not Turning On
- Ensure the watch is fully charged. Connect it to the charger for at least 30 minutes.
- Press and hold the power button for several seconds.
5.2 Connection Issues (Bluetooth Pairing)
- Verify Bluetooth is enabled on your smartphone and the watch.
- Ensure the companion app is running and has necessary permissions.
- Try unpairing and re-pairing the device through the app.
- Restart both your smartphone and the smartwatch.
5.3 Notifications Not Appearing
- Check notification settings within the companion app to ensure desired apps are enabled.
- Verify that your smartphone's notification settings allow the companion app to send notifications.
- Ensure the watch is connected via Bluetooth.
5.4 Inaccurate Health Data
- Ensure the watch is worn snugly on your wrist, not too loose or too tight.
- Clean the sensor on the back of the watch.
- Remember that health data is for reference only and not for medical diagnosis.
6. Specifications
| Feature | Detail |
|---|---|
| Model Number | P66D |
| Display | 1.85-inch HD LCD Touchscreen (260 x 260 resolution) |
| Battery Capacity | 280 mAh Lithium-polymer |
| Battery Life (Average) | 7 days (daily use), 15 days (standby) |
| Connectivity | Bluetooth |
| Water Resistance | IP68 (up to 1.5 meters depth) |
| Compatibility | iOS 8.0+ / Android 4.4+ |
| Sensors | Optical Heart Rate Sensor, Pedometer |
| Sport Modes | 112 (Basketball, Running, Cycling, Climbing, American Football, etc.) |
| Strap Material | Silicone |
| Case Material | Plastic |
| Dimensions | 20 x 8 x 2 centimeters |
| GPS | Via smartphone |
7. Warranty and Support
Ddidbi is committed to providing quality smart wearable devices. For any questions, concerns, or suggestions regarding your Ddidbi P66D Smartwatch, please contact the manufacturer directly through the contact information provided with your purchase or on the official Ddidbi website. Please retain your proof of purchase for warranty claims.