1. Introdução
Welcome to the world of immersive audio with your new TOZO NC20 Pro Active Noise Cancelling Wireless Earbuds. These earbuds are designed to provide a superior listening experience with advanced features such as LDAC Hi-Res Audio, adaptive active noise cancellation, and a smart touch screen charging case. This manual will guide you through the setup, operation, and maintenance of your device to ensure optimal performance and longevity.
2. O que está na caixa
Your TOZO NC20 Pro package includes the following items:
- TOZO NC20 Pro Active Noise Cancelling Wireless Earbuds
- Wireless Charging Case with Smart Touch Screen
- Pontas auriculares (vários tamanhos para ajuste ideal)
- Cabo USB-C (A para C) (20 cm)
- Manual do usuário
3. Configuração
3.1. Ativação
To activate your TOZO NC20 Pro earbuds, ensure they are charged. You can power them on by pressing and holding the multifunction button on the charging case or by connecting a USB-C cable. Remove the insulation film from the earbuds and place them into the charging case. Close the lid for 10 seconds, then take the earbuds out again to complete the activation. For full functionality, open the TOZO App, connect to the charging case, and synchronize your phone's time.
3.2. Emparelhamento Bluetooth
To pair your earbuds with a device, take the earbuds out of the charging case. The white indicator light on the earbuds will slowly flash, indicating pairing mode. On your phone or device, search for "TOZO NC20 Pro" in the Bluetooth settings and tap to connect. If the earbuds have been paired before, they will automatically reconnect to the last connected device. If no pairing record exists or pairing was canceled, the earbuds will enter pairing mode automatically.
3.3. Conexão do aplicativo
Download and install the TOZO App from Google Play Store or the Apple App Store. After confirming the earbuds are connected via Bluetooth, open the App, complete authorization, tap the "+" icon, search for "TOZO NC20 Pro", and connect. Once connected, all available functions and settings will be displayed, and the charging case time will sync automatically.
3.4. Usando os fones de ouvido
Gently insert the earbuds into your ears. Rotate them toward the ear concha until they fit securely and comfortably. If the default ear tips feel uncomfortable, please try a different size from the spare ear tips provided in the box to ensure a proper seal and optimal sound quality.
4. Operação
4.1. Touch & Button Controls
Os fones de ouvido possuem controles de toque intuitivos para diversas funções:
- Controles de música: Double-tap Left Earbud for Previous Track, Double-tap Right Earbud for Next Track. Single tap Right Earbud for Play/Pause. Press and hold Left Earbud for Volume Down, Press and hold Right Earbud for Volume Up.
- Controles de chamada: Single tap Left or Right Earbud to Answer Call. Press and hold Left or Right Earbud to Reject/End Call or Cancel Outgoing Call.
- Controle de cancelamento de ruído: Single tap Left Earbud to switch between Transparency Mode and Noise Cancellation. Triple tap Left or Right Earbud for Normal Mode (ANC OFF).
- Assistente de voz: Triple tap Right Earbud to activate your phone's voice assistant.
- Factory Reset (Method 1): Place earbuds into the charging case and open the lid. Press and hold the multifunction button for 3 seconds until the factory reset menu appears on the case display. Select "Factory Reset" option.
- Factory Reset (Method 2 via Case): On the charging case, go to "Settings" > "General", then select "Factory reset".
- Emparelhamento forçado: If earbuds cannot be found, go to Charging Case > Settings > General > Force Pairing. Follow on-screen instructions to clear pairing records and allow earbuds to be rediscovered.
4.2. Smart Case Gesture Controls
The smart charging case offers additional gesture controls:
- Double tap screen or single press button: Wake screen.
- Swipe right: Unlock.
- Swipe left or right: Select functions (Music, Volume, Noise Cancellation, Sound Modes, Find My Earbuds, Low Latency Mode, Settings).
4.3. App Features Overview
The TOZO App unlocks a wide range of customization and advanced features:
- Hearing Compensation: The app conducts a hearing test to analyze sensitivity across different frequencies. AI enhances less sensitive frequencies while reducing volume in sensitive ranges to protect hearing.
- Noise Cancellation Settings: Six modes available via the App or charging case: Noise Cancellation, Transparency Mode, Reduce Wind Noise, Leisure Mode, Normal Mode, Adaptive Mode. (Noise cancellation memory is off by default and can be manually enabled.)
- Equalizador (EQ): 32 preset EQs + 1 custom EQ available via App and charging case. Free-band advanced EQ available in the App. (All EQs except Advanced EQ can be shared to EQ Zone.)
- Modos de som: Music Mode / Spatial Audio available via App or case.
- Charging Case Settings: Wallpaper, brightness, screen timeout, language, time format, and more.
- Papel de parede personalizado: Upload images via the wallpaper menu following on-screen steps.
- Manual do usuário digital: Access via Settings -> "?", or scan the QR code in the printed manual.
- Modo de baixa latência: Enable Low Latency Mode via App settings or Sound Mode menu. (Low Latency Mode is not saved after power-off to ensure signal stability.)
- Detecção intra-auricular: Wear Detection can be toggled via App or charging case. Music pauses when earbuds are removed and resumes when worn.
- Conexão multiponto: Power on the earbuds and pair with Device A. Disconnect Device A, then the earbuds enter pairing mode and connect to Device B. Reconnect Device A by selecting it from your Bluetooth list. The earbuds will then be connected to both devices simultaneously. (When the earbuds are connected to two devices simultaneously, if Device A is playing audio and you start playback on Device B, the earbuds will automatically pause playback on Device A and switch to play audio from Device B. Multipoint connection and LDAC cannot be enabled at the same time.)
- LDACs: Enable LDAC via App or charging case settings. (Earbuds will restart when LDAC is enabled or disabled. LDAC and Multipoint connection cannot be enabled at the same time.)
- Personalização do controle de toque: Go to App Settings -> Touch Controls to customize left and right earbud functions.
- Atualizações OTA: App Settings -> Scroll to OTA Update. A red "NEW" indicator appears when updates are available. Download the latest firmware for optimal performance. Charging case -> Scroll to OTA Update. A red "NEW" indicator appears when updates are available. Download the latest firmware for optimal performance.
- Encontre meus fones de ouvido: Use via App or charging case to locate left or right earbud separately. Do not use while wearing the earbuds. (Charging case search is unavailable when the connection icon is grayed out.)
- Water Ejection: If earbuds get wet, activate Water Ejection in the App. After completion, wipe dry and let them rest before use.
- Volume Balance: Adjust the volume balance of the left and right earbuds in the App.
- Recursos de IA: Meeting Recording, Real-Time Translation, Simultaneous Interpretation, AI Chat.

5. Manutenção
5.1. Limpeza Diária
To ensure reliable performance, clean the charging contacts on the earbuds and the charging case regularly using a cotton swab. Check whether the charging contacts are dirty or blocked by foreign objects.
6. Solução De Problemas
6.1. Problemas e soluções comuns
- Os fones de ouvido não estão emparelhando: Ensure earbuds are fully charged and in pairing mode. Disconnect from other devices and try re-pairing. Perform a factory reset if necessary.
- Problemas com a qualidade do som: Check ear tip fit for a proper seal. Adjust EQ settings in the TOZO App. Ensure LDAC is enabled for high-resolution audio if your device supports it.
- Cancelamento de ruído ineficaz: Ensure earbuds are properly seated in your ears. Select the appropriate ANC mode in the app (Noise Cancellation, Adaptive Mode).
- Problemas de carregamento: Clean charging contacts on both earbuds and case. Ensure the USB-C cable is securely connected or the wireless charging pad is correctly aligned. Remove any metal objects from the wireless charging pad.
- Problemas de conectividade do aplicativo: Ensure Bluetooth is enabled and the earbuds are connected to your phone. Restart the app or your phone if issues persist.
6.2. Wireless Charging Tips
Place the charging case face-up at the center of the wireless charging pad. The battery indicator light on the charging case will turn on and begin flashing. Once fully charged, the light will stop flashing. Note: Please remove any metal objects from the charging pad before charging. If the charging case overheats, charging will automatically pause.
7. Especificações
| Recurso | Detalhe |
|---|---|
| Nome do modelo | NC20 |
| Controle de Ruído | Cancelamento de ruído adaptativo |
| Tipo de driver de áudio | DLC Driver |
| Tamanho do driver de áudio | 12 milímetros |
| Resposta de frequência | 40 kHz |
| Sensibilidade | 120 dB |
| Impedância | 32 Ohms |
| Tecnologia de Conectividade | Sem fio (Bluetooth 5.4) |
| Alcance Bluetooth | 15 metros |
| Latência de Áudio | 60 milissegundos |
| Duração da bateria (fones de ouvido) | Até 16.5 horas (ANC desligado), 12.5 horas (ANC ligado) |
| Duração da bateria (total com a capa) | Até 80 horas (ANC desligado), 63 horas (ANC ligado) |
| Tempo de carregamento | 2 horas |
| Nível de resistência à água | IPX8 à prova d'água |
| Tipo de controle | Controle por toque, aplicativo |
| Dispositivos compatíveis | Celulares, laptops, tablets |
| Peso do item | 3.2 onças |
| Fabricante | TOZO |
| UPC | 810102982292 |
8. Garantia e suporte
For warranty information, technical support, or any inquiries regarding your TOZO NC20 Pro earbuds, please visit the official TOZO website or contact their customer service directly. Details can typically be found in the product packaging or on the TOZO brand store page.
TOZO is committed to providing high-quality products and excellent customer service. If you encounter any issues, do not hesitate to reach out to their support team for assistance.





