1. Másview
The Acefast AceFit Air Open Ear Headphones are designed for comfort and performance, especially during active use. They feature an open-ear design allowing awareness of surroundings, lightweight construction, and robust audio capabilities.

Image: Acefast AceFit Air headphones highlighting their ultra-light design and unparalleled sound quality.
Características principales:
- Ultra Thin & Ultra Comfort: Crafted with durable Ni-Ti memory wire and supermolecular liquid silicone, featuring an ultra-slim 0.7mm earhook for all-day comfort, even for glasses wearers.
- Redefining Open Ear Buds Audio: Equipped with a 3-magnet super-linear speaker designed by Luxshare-ICT, offering up to 0.5mm high amplitude for deeper bass, clearer highs, and unmatched clarity.
- 7.5g Ultra Light & Portable: Each headphone weighs only 7.5g, ensuring comfort. The 1.04-inch thick charging case is highly portable.
- Tailored Sound & Open Ear Comfort: Features AELC digital enhancement and customizable EQ via the ACEFAST app for personalized audio.
- Cutting Edge Features: Seamless dual-device connection, 2 hours of use from a 5-minute charge, IP54 water resistance, and 4-mic ENC noise cancellation for clear calls.
2. ¿Qué hay en la caja?
Your Acefast AceFit Air package includes everything you need to get started:

Image: The Acefast AceFit Air product box displaying the earbuds, charging case, USB-C charging cable, and user manual.
- Acefit Air Open-ear Earbuds x2
- Acefit Air Charging Case x1
- Cable de carga USB-C x1
- Manual de usuario x1
3. Guía de configuración
Follow these steps to set up your Acefast AceFit Air headphones for the first time:
- Desempaquetar y preparar: Carefully remove the earbuds and charging case from the packaging. Remove the insulating film between the earbuds and charging case.
- Cargue el dispositivo: Connect the USB-C charging cable to the charging port on the case and a power source. Ensure the earbuds are properly seated in the charging case. Charge fully before first use. If one earbud doesn't work initially, charge both for a while as it may have powered on during shipping and drained.
- Encendido: Los auriculares se encenderán automáticamente cuando se retiren del estuche de carga.
- Emparejamiento: Open the charging case. The earbuds will enter pairing mode. On your device (smartphone, laptop, etc.), go to Bluetooth settings and select "AceFit Air" from the list of available devices to connect.

Image: The Acefast AceFit Air earbuds resting in their open charging case, ready for pairing.
4. Instrucciones de funcionamiento
4.1. Emparejamiento y conectividad
The AceFit Air headphones utilize Bluetooth 5.4 for stable and efficient connections. They support effortless multi-device pairing, allowing you to seamlessly switch between two connected devices like a laptop and a smartphone.

Image: Acefast AceFit Air headphones floating between a laptop and a smartphone, illustrating effortless multi-device pairing.
4.2. Controles
The earbuds feature intuitive touch controls for easy management of your audio and calls. You can also customize settings via the dedicated ACEFAST app.

Image: A diagram illustrating the touch control functions of the Acefast AceFit Air headphones, including tap, double tap, three taps, and long touch for various commands.

Image: Screenshots of the ACEFAST mobile application, showing options to monitor battery life, choose sound modes, customize EQ settings, and tailor earphone controls.
4.3. Duración de la batería y carga
Enjoy extended listening with up to 32 hours of total playtime with the charging case. A quick 5-minute charge provides 2 hours of playback.

Image: An illustration highlighting the 32-hour battery life and the quick charge feature of the Acefast AceFit Air headphones.
4.4. Water Resistance and Call Quality
The earbuds are IP54 water-resistant, making them suitable for workouts and light rain. Crystal-clear calls are ensured by the 4-mic ENC noise cancellation technology.

Image: An Acefast AceFit Air earbud with a visual representation of directional sound gathering, emphasizing less sound leakage for privacy and clear calls.
4.5. Speaker Technology
The AceFit Air features a 3-magnet super-linear speaker, co-developed with Luxshare ICT, which sets a new benchmark for sound quality in open-ear headphones. This advanced design delivers powerful bass and incredible detail.
Video: A demonstration comparing the sound quality and internal components of a normal speaker versus the Acefit Air's 3-magnet super-linear speaker, highlighting its superior bass and clarity.
5. Mantenimiento
To ensure the longevity and optimal performance of your Acefast AceFit Air headphones, follow these maintenance tips:
- Limpieza: Limpie regularmente los auriculares y el estuche de carga con un paño suave, seco y sin pelusa. Evite usar productos químicos agresivos o materiales abrasivos.
- Almacenamiento: Guarde siempre los auriculares en su estuche de carga cuando no los utilice para protegerlos del polvo, la suciedad y los daños físicos.
- Temperatura: Avoid exposing the headphones to extreme temperatures (hot or cold) or high humidity, as this can affect battery life and internal components.
6. Solución de problemas
If you encounter any issues with your Acefast AceFit Air headphones, try the following solutions:
- Earbud Not Working (First Use): Ensure the insulating film between the earbuds and charging case has been removed. Charge both earbuds and the case fully, as one earbud might have powered on during shipping and drained its battery.
- Problemas de emparejamiento: Ensure Bluetooth is enabled on your device and the earbuds are in pairing mode (indicated by a flashing light). Try forgetting the device on your phone and re-pairing.
- Sin sonido/volumen bajo: Check the volume levels on both your connected device and the earbuds. Ensure the earbuds are properly seated on your ears.
- Problemas de carga: Verifique que el cable USB-C esté bien conectado tanto al estuche como a la fuente de alimentación. Pruebe con otro cable USB-C o adaptador de corriente.
- Controles táctiles que no responden: Ensure the touch area is clean and dry. A quick reset by placing the earbuds back in the case and closing it might resolve the issue.
For more complex issues, please refer to the official user guide or contact customer support.
7. Especificaciones técnicas
| Característica | Especificación |
|---|---|
| Nombre del modelo | AceFit Air |
| Tecnología de conectividad | Inalámbrico (Bluetooth 5.4) |
| Colocación de orejas | Oído abierto |
| Nivel de resistencia al agua | Resistente al agua IP54 |
| Estuche de transporte Duración media de la batería | 32 horas |
| Estuche de transporte Tiempo de carga de la batería | 2 horas |
| Tipo de controlador de audio | Dynamic Driver (3-magnet super-linear speaker) |
| Tamaño del controlador de audio | 20 milímetros |
| Tipo de control | Control de aplicaciones, toque |
| Peso del artículo (auriculares) | 7.5 g (cada uno) |
| Dimensiones del producto | 1.97 x 2.76 x 0.59 pulgadas |
| Material | Skin-friendly Silicone, High-polymer Eco-friendly Plastic, Aerospace-grade titanium alloy |
8. Garantía y soporte
ACEFAST products typically come with a standard manufacturer's warranty covering defects in materials and workmanship. Please refer to the official user guide for specific warranty terms and conditions.
For detailed support, including comprehensive troubleshooting, FAQs, and contact information for customer service, please consult the full Instructions for Use (IFU) PDF document:





