Introduction
Thank you for choosing the TOZO HT3 Wireless Over-Ear Headphones. This manual provides detailed instructions for setting up, operating, and maintaining your headphones to ensure optimal performance and longevity. Please read this manual thoroughly before use.
What's in the Box
- TOZO HT3 Wireless Over-Ear Headphones
- USB Type-C Charging Cable
- 3.5mm AUX Audio Cable
- Quick Start Guide & User Manual
Product Overview
Familiarize yourself with the key components and features of your TOZO HT3 headphones.

Image: TOZO HT3 Wireless Over-Ear Headphones, front view.
Image: Diagram illustrating the button layout and their respective functions on the TOZO HT3 headphones.
Setup
1. Charging the Headphones
Before first use, fully charge your headphones. Connect the provided USB Type-C cable to the charging port on the headphones and to a USB power source. The LED indicator will show charging status and turn off when fully charged. A full charge takes approximately 2 hours and provides up to 90 hours of playback with ANC off at 50% volume.
Image: The TOZO HT3 headphones with a USB Type-C cable connected for charging.
2. Powering On/Off
- Power On: Press and hold the Power button for 3 seconds until the LED indicator lights up.
- Power Off: Press and hold the Power button for 3 seconds until the LED indicator turns off.
3. Bluetooth Pairing
- Ensure the headphones are powered off.
- Press and hold the Power button for 5 seconds until the LED indicator flashes blue and red, indicating pairing mode.
- On your device (smartphone, tablet, computer), enable Bluetooth and search for available devices.
- Select "TOZO HT3" from the list of devices.
- Once connected, the LED indicator will flash blue slowly.
4. Multipoint Connection
The TOZO HT3 headphones support connecting to two Bluetooth devices simultaneously. To use this feature:
- Pair the headphones with the first device as described above.
- Disable Bluetooth on the first device. The headphones will re-enter pairing mode.
- Pair the headphones with the second device.
- Re-enable Bluetooth on the first device. The headphones should automatically connect to both devices.
- Audio will switch between devices based on which one is actively playing media or receiving a call.
Image: Illustration of TOZO HT3 headphones connected to both a smartphone and a tablet, demonstrating multipoint connection.
Operating Instructions
Button Functions
| Action | Button Press | Function |
|---|---|---|
| Power On/Off | Hold Power button (3s) | Turns headphones on or off. |
| Play/Pause | Single press Multi-function button | Plays or pauses audio. |
| Answer/End Call | Single press Multi-function button | Answers an incoming call or ends an active call. |
| Reject Call | Hold Multi-function button (2s) | Rejects an incoming call. |
| Volume Up | Single press Volume + button | Increases audio volume. |
| Volume Down | Single press Volume - button | Decreases audio volume. |
| Next Track | Hold Volume + button (2s) | Skips to the next audio track. |
| Previous Track | Hold Volume - button (2s) | Goes to the previous audio track. |
| Activate Voice Assistant | Double press Multi-function button | Activates your device's voice assistant (Siri, Google Assistant, etc.). |
| AI Chat | Double press ANC button | Initiates AI chat function. |
Active Noise Cancellation (ANC) Modes
The TOZO HT3 headphones feature adaptive active noise cancellation with a depth of up to -45dB. Press the ANC button to cycle through the following modes:
- ANC On: Reduces ambient noise for an immersive listening experience.
- Transparency Mode: Allows you to hear your surroundings while listening to audio.
- Normal Mode: ANC is off.

Image: The TOZO HT3 headphones highlighting the -45dB noise cancelling capability, ideal for various environments.
Wired Connection (AUX Mode)
To use the headphones with a wired connection, plug the 3.5mm AUX audio cable into the headphone's AUX port and the other end into your audio device. In wired mode, Bluetooth and ANC functions may be limited or unavailable.
Image: TOZO HT3 headphones connected to a device using the 3.5mm AUX audio cable.
TOZO App Customization
Download the official TOZO app to unlock advanced features and personalize your listening experience. The app allows you to:
- Customize 32 equalizer presets and 6 environmental sound modes.
- Adjust noise reduction modes.
- Access spatial audio settings.
- Perform firmware updates.
- Utilize AI features like real-time translation and AI chat.

Image: Screenshots of the TOZO app interface, demonstrating options for EQ customization, noise cancellation modes, and other settings.
Maintenance
Cleaning
- Wipe the headphones with a soft, dry cloth.
- Do not use harsh chemicals or abrasive materials.
- Keep the charging port free of dust and debris.
Storage
Store the headphones in a cool, dry place away from extreme temperatures and direct sunlight. The foldable design allows for compact storage.
Image: TOZO HT3 headphones folded compactly, being placed into a carrying bag.
Troubleshooting
- Headphones not powering on: Ensure the headphones are charged. Connect to a power source and try again.
- Cannot pair with device: Make sure Bluetooth is enabled on your device and the headphones are in pairing mode (flashing blue and red LED). Try restarting both devices.
- No sound: Check volume levels on both the headphones and your connected device. Ensure the correct audio output is selected on your device. If using AUX cable, ensure it is fully inserted.
- Poor sound quality: Try adjusting EQ settings in the TOZO app. Ensure there are no obstructions between the headphones and your Bluetooth device.
- ANC not working effectively: Ensure the earcups form a good seal around your ears. Cycle through ANC modes to confirm it is active.
- Microphone issues: Ensure the headphones are selected as the input device for calls/recordings. Check for software updates via the TOZO app.
Specifications
| Feature | Detail |
|---|---|
| Model Name | HT3 |
| Connectivity Technology | Bluetooth 6.0, Wired (3.5mm AUX) |
| Noise Control | Active Noise Cancellation (-45dB) |
| Driver Size | 40mm Dynamic Drivers |
| Frequency Response | 20Hz-45kHz |
| Impedance | 32 Ohm |
| Sensitivity | 102 dB |
| Battery Life | Up to 90 hours (ANC off, 50% volume) |
| Charging Time | Approx. 2 hours |
| Charging Port | USB Type-C |
| Weight | 370g |
| Material | Acrylonitrile Butadiene Styrene (ABS) |
| Special Features | Spatial Audio, AI Chat (5 Mics), 32 EQ Presets, Multipoint Connection, Ergonomic Design, Foldable |
Warranty and Support
Warranty Information
TOZO products are covered by a limited warranty from the date of purchase. Please refer to the warranty card included in your package or visit the official TOZO website for detailed warranty terms and conditions.
Customer Support
For technical assistance, troubleshooting, or any inquiries regarding your TOZO HT3 headphones, please contact TOZO customer support through their official website or the contact information provided in your quick start guide.





