1. Product Overview
The HOCO EA5 Duke III is a clip-on true wireless Bluetooth headset designed for comfortable wear and high-quality audio. It features Bluetooth 5.3 for stable connectivity, bone conduction technology, and intuitive touch controls. The charging case has a distinctive lychee texture surface.

Image: Black HOCO EA5 Duke III headset in its charging case.

Image: White HOCO EA5 Duke III headset in its charging case.
Video: Product demonstration showcasing features like lychee texture, Bluetooth pairing, ear clip design, wearing comfort, touch controls, and charging.
2. Package Contents
- HOCO EA5 Duke III Headset (Left and Right earbuds)
- Charging Case
- Charging Cable (Type-C)
- User Manual (this document)

Image: Retail packaging for the black HOCO EA5 Duke III headset.
3. Getting Started
3.1 Initial Charging
Before first use, fully charge the headset and charging case. Connect the provided Type-C charging cable to the charging port on the case and a power source. The indicator light on the charging case will show charging status.

Image: White HOCO EA5 Duke III charging case with charging cable inserted.
3.2 Power On/Off
- Power On: Open the charging case cover. The headsets will automatically power on and enter pairing mode.
- Power Off: Place the headsets back into the charging case and close the cover. They will automatically disconnect and power off.
3.3 Bluetooth Pairing
- Ensure the headsets are charged and powered on (open the charging case).
- On your device (smartphone, tablet, etc.), go to Bluetooth settings.
- Search for available devices and select "HOCO EA5" from the list.
- Once connected, you will hear a confirmation tone, and the headset indicator light will change.
The HOCO EA5 features a brand new BT 5.4 chip for stable and fast connection.

Image: White HOCO EA5 Duke III headset in charging case next to a phone showing Bluetooth pairing screen.
3.4 Wearing the Headset
The EA5 Duke III features a fully open ear clip design, ensuring an ergonomic, stable, and comfortable fit for extended wear.

Image: A person wearing a black HOCO EA5 Duke III headset, demonstrating the ear clip design.
4. Operating Instructions
The HOCO EA5 Duke III headset features touch controls for various functions.
- Music Playback: Tap to play/pause.
- Call Management: Tap to answer/end calls.
- Voice Assistant: The headset supports summoning Siri (and other voice assistants depending on your device). Refer to your device's manual for specific activation methods.
- Master-Slave Switching: The headset supports master-slave switching, allowing either earbud to be used independently.
5. Maintenance and Care
- Cleaning: Use a soft, dry cloth to clean the earbuds and charging case. Do not use harsh chemicals or abrasive materials.
- Storage: When not in use, store the headset in its charging case to protect it from dust and damage.
- Water Resistance: The headset is waterproof. However, avoid prolonged exposure to water or submersion. Ensure the charging port is dry before charging.
- Battery Care: To prolong battery life, avoid fully discharging the battery frequently. Charge the device regularly, even if not in constant use.
6. Troubleshooting
6.1 Common Issues and Solutions
- Headset not pairing:
- Ensure the headsets are charged and out of the case.
- Turn off and on Bluetooth on your device.
- Forget "HOCO EA5" from your device's Bluetooth list and try pairing again.
- Ensure no other devices are actively connected to the headset.
- No sound:
- Check the volume level on both your device and the headset.
- Ensure the headset is properly connected to your device.
- Try playing audio from a different application or source.
- Charging issues:
- Ensure the charging cable is securely connected to both the case and the power source.
- Try a different charging cable or power adapter.
- Check the charging port for any debris.
7. Specifications
| Feature | Specification |
|---|---|
| Brand Name | HOCO |
| Model | EA5 Duke III |
| Bluetooth Version | 5.3 |
| Bluetooth Chip | JL AC6973D4 |
| Charging Case Battery Capacity | 400mAh |
| Headset Battery Capacity | 35mAh |
| Battery Life (single headset) | Up to 6 hours |
| Total Battery Life (with charging case) | About 33 hours |
| Material | ABS |
| Product Weight | 209g |
| Dimensions (Charging Case) | 64.5*52*31mm |
| Earcups Type | Open-back |
| Number Of Drivers | 2 |
| Driver Diameter | 13mm |
| Impedance Range | up to 32 Ω |
| Maximum Wireless Range | 10m-20m |
| Sound Isolating | Yes |
| Voice Assistant Built-in | Yes (Apple Siri Support) |
| With Microphone | Yes |
| Waterproof | Yes |
| Volume Control | Yes |
| Vocalism Principle | Dynamic |
| Wireless Type | Bluetooth |
| Connectors | Type-C |
| Communication | True wireless |
| Style | Ear Hook |
| Charging Method | Cable |
| Headphone Pads Material | Silicone |
| Package Weight | 0.25 kg (250g) |
| Package Dimensions | 21cm x 15cm x 6cm |
8. Warranty and Support
HOCO products are manufactured to high-quality standards. For any issues or support, please contact your retailer or the official HOCO customer service.
The product may be eligible for free returns within 90 days, and refunds for issues such as delayed delivery, lost packages, or damaged items, as per seller policies.
9. User Tips
- For optimal sound quality and comfort, ensure the ear clips are securely and comfortably positioned on your ears.
- Regularly clean the charging contacts on both the earbuds and the case to ensure reliable charging.
- If experiencing connectivity issues, try resetting your device's Bluetooth settings or restarting both the headset and your connected device.





