1. Introduction
Welcome to the EZON H-Box user manual. This guide provides comprehensive instructions for setting up, operating, and maintaining your new Bluetooth Heart Rate Monitor and Pixel Art Clock. Please read this manual thoroughly before using the device to ensure proper function and safety.

Figure 1: EZON H-Box Product Overview
2. Product Features
- Pixel Art Display: Features animated pixel art for timekeeping and visual feedback.
- Bluetooth Heart Rate Monitor: Integrated sensor for real-time heart rate tracking, compatible with Bluetooth devices.
- Interval Trainer Function: Customizable workout intervals for high-intensity training.
- Versatile Functionality: Functions as an alarm clock, fitness monitor, stopwatch, and countdown timer.
- No App Required: Operates as a standalone device without the need for a smartphone application.

Figure 2: Key Features of the EZON H-Box
3. Getting Started
3.1 Package Contents
Ensure all items are present in the package:
- EZON H-Box Device
- USB Type-C Charging Cable
- User Manual
3.2 Charging the Device
Before first use, fully charge the EZON H-Box. Connect the provided Type-C charging cable to the charging port (7) on the back of the device and to a standard USB power adapter (not included).
3.3 Power On/Off
To power on the device, press and hold the MODE button (1) for a few seconds until the display illuminates. To power off, repeat the process.

Figure 3: Product Diagram with Buttons and Ports
- MODE: Mode selection and option switching.
- SET: Settings and saving.
- LIGHT: Light effect control and option switching.
- +: Value adjustment and function control.
- -: Value adjustment and function control.
- Speaker: Buzzer prompt.
- Type-C port: Charging interface.
4. Operating Instructions
4.1 Connecting the Heart Rate Monitor
The EZON H-Box can pair with EZON C022Pro or C009Pro Heart Rate Series chest straps. To pair, ensure the chest strap is worn correctly and activated. On the H-Box, press and hold the [-] button for 2 seconds to initiate Bluetooth pairing. The device will display the heart rate once connected.

Figure 4: Bluetooth Pairing Process
4.2 Using Heart Rate Monitoring
Once paired, the EZON H-Box displays your real-time heart rate. The device provides alerts if your heart rate is too high or too low, helping you maintain a safe and effective workout intensity.
Video 1: Demonstrates real-time heart rate monitoring and alerts during exercise.
The device also visually indicates your heart rate zone:
| Zone | LED Indication | Effect |
|---|---|---|
| Warm-Up Zone (≤60%) | Green | Activate Body |
| Fat-Burning Zone (60-70%) | Blue | Burn Fat |
| Aerobic Zone (70-80%) | Yellow | Boost Cardio |
| Anaerobic Zone (80-90%) | Orange | Build Stamina |
| Max Alert Zone (>90%) | Red | Alert for Overtraining |

Figure 5: Visual Heart Rate Zones
Video 2: Shows the device used as a fitness tracker with HRM and stopwatch during various exercises.
4.3 Interval Training Mode
The EZON H-Box allows you to customize up to 99 sets of workout and rest intervals. Use the MODE button to navigate to the Interval Training mode, then use the SET, +, and - buttons to configure your desired workout and rest durations. The device will provide alerts for transitions between intervals.

Figure 6: Interval Training Mode in Use
4.4 Stopwatch and Countdown Modes
The device includes a precision stopwatch for timing activities and a countdown timer for various uses. Navigate to these modes using the MODE button. Use the + and - buttons to set countdown times or start/stop the stopwatch.

Figure 7: Stopwatch and Countdown Modes
4.5 Clock and Alarm Functions
The EZON H-Box serves as a stylish pixel art clock. You can switch between 12-hour and 24-hour formats. It also features a perpetual calendar and supports up to 5 independent alarm groups. Use the SET button to enter time and alarm settings, and the + and - buttons to adjust values.

Figure 8: Animated Pixel Art Display in Various Settings

Figure 9: Clock and Alarm Features
5. Care and Maintenance
- Cleaning: Wipe the device with a soft, dry cloth. Avoid using abrasive cleaners or solvents.
- Storage: Store the device in a cool, dry place within the specified storage temperature range of -10°C to 60°C.
- Battery: The internal battery (CR2032) provides approximately 24 months of timekeeping. If the device is not holding a charge or functioning correctly, contact customer support for battery service.
6. Troubleshooting
6.1 Device Not Powering On
- Ensure the device is fully charged. Connect it to a power source using the Type-C cable.
- Press and hold the MODE button for several seconds.
6.2 Heart Rate Monitor Not Connecting
- Verify the chest strap is worn correctly and has good contact with the skin.
- Ensure the chest strap battery is functional.
- Re-initiate pairing on the H-Box by pressing and holding the [-] button for 2 seconds.
6.3 Inaccurate Heart Rate Readings
- Check the fit and placement of the chest strap. It should be snug and positioned correctly on your chest.
- Moisten the electrodes on the chest strap with water or electrode gel for better conductivity.
6.4 Display Issues
- If the display is dim, ensure the device is charged.
- Adjust the brightness using the LIGHT button.
7. Specifications

Figure 10: Product Attributes and Dimensions
| Attribute | Detail |
|---|---|
| Product Name | H-BOX |
| Product Type | Bluetooth Heart Rate LED Display |
| Model Number | C027A11 |
| Operating Temperature | 0°C - 50°C |
| Storage Temperature | -10°C - 60°C |
| Size | 100mm * 100mm * 37mm |
| Charging Port | Type-C |
| Battery Model | CR2032 |
| Battery Life (Timekeeping only) | 24 months |
| Material | Acrylonitrile Butadiene Styrene (ABS) |
| Screen Size | 3.94 Inches |
| Item Weight | 0.35 Kilograms |
8. Warranty and Support
The EZON H-Box comes with a standard manufacturer's warranty. For detailed warranty information, product support, or service inquiries, please visit the official EZON store or contact their customer service directly.
EZON Store Link: https://www.amazon.com/stores/EZON/page/CCF1BF01-BE8A-4226-9DAB-EA11B1C2CB64
