Introducció
The Sentry Over the Ear Wireless Active Noise Cancelling Headphones are designed to provide an immersive audio experience with advanced noise cancellation. These headphones offer up to -20dB of noise reduction, ensuring a focused listening environment. Featuring Bluetooth V5.3 for seamless wireless connectivity, a long-lasting battery, and a comfortable, foldable design, they are ideal for travel and daily use. Integrated controls allow for easy management of audio and calls.

Figure 1: SENTRY OSH Over Ear Bluetooth Wireless Headphones and Carrying Case.
Què hi ha a la caixa
Upon opening your SENTRY OSH headphone package, you will find the following items:
- SENTRY OSH Over Ear Bluetooth Wireless Headphones
- USB C Charging Wire
- Funda protectora de transport
- Manual d'usuari (aquest document)

Figure 2: The included hard shell carrying case provides protection and portability for your headphones.
Característiques del producte
Advanced Noise Cancellation
These headphones are equipped with Active Noise Cancellation (ANC) technology, effectively blocking out ambient noise by up to -20dB. This feature allows for an isolated listening experience, minimizing distractions from your surroundings. The ANC is particularly effective at reducing mid to high-frequency sounds.

Figure 3: Key features including Active Noise Cancellation and Bluetooth V5.3.

Figure 4: Awareness Mode allows you to stay connected to your surroundings while enjoying audio.
Wireless Connectivity (Bluetooth V5.3)
Experience seamless audio streaming with Bluetooth V5.3, offering up to 30 feet of stable, unbreakable connectivity. No application is required for pairing, ensuring a straightforward connection process with your devices. On-ear buttons provide convenient control over volume, track skipping, and call management.

Figure 5: Bluetooth 5.3 technology ensures stable and efficient wireless connection.
Durada de la bateria estesa
The integrated 400mAh battery provides up to 22 hours of uninterrupted listening with Active Noise Cancellation enabled. A full charge requires approximately 3 hours using the included USB-C charging cable.

Figure 6: Enjoy long listening sessions with the extended battery life and quick charging capability.
Comfortable and Compact Design
Ergonomic over-ear cups and an adjustable headband ensure a snug and comfortable fit, even during prolonged listening periods. The bi-folding design allows the headphones to be compactly stored in the included carrying case, making them highly portable.

Figure 7: Studio-grade earpads provide comfort for all-day wear.
Deep Bass Technology
Experience vibrant soundscapes with deep bass, clear vocals, and balanced stereo sound that brings your favorite music to life.

Figure 8: Deep Bass Technology enhances your audio experience.
Configuració
1. Càrrega dels auriculars
Before first use, fully charge your SENTRY OSH headphones. Connect the included USB-C charging cable to the charging port on the headphones and the other end to a compatible USB power source (e.g., computer USB port, wall adapter). The charging indicator light will show the charging status. A full charge takes approximately 3 hours.
2. Encès / apagat
To power on the headphones, press and hold the Power button (located on the right earcup) for a few seconds until you hear an audible prompt or see the indicator light illuminate. To power off, press and hold the Power button again until the headphones shut down.
3. Emparellament Bluetooth
- Assegureu-vos que els auriculars estiguin apagats.
- Press and hold the Power button until the indicator light flashes rapidly, indicating pairing mode.
- Al dispositiu (telèfon intel·ligent, tauleta, ordinador portàtil), navegueu fins a la configuració de Bluetooth.
- Cerca available devices and select "SENTRY OSH" from the list.
- Once connected, the indicator light on the headphones will change, and you will hear a confirmation sound.
Els auriculars es tornaran a connectar automàticament al darrer dispositiu emparellat quan s'engeguin, si el Bluetooth del dispositiu està actiu i dins del seu abast.

Figure 9: Easy pairing technology ensures quick and hassle-free connection to your devices.
Instruccions de funcionament
Controls de reproducció d'àudio
- Reproduir/pausa: Press the Multi-function button (often the power button or a dedicated play/pause button) once.
- Pista següent: Premeu i manteniu premut el botó de pujar el volum.
- Pista anterior: Manteniu premut el botó de baixar el volum.
- Pujar el volum: Premeu breument el botó de pujar el volum.
- Baixar el volum: Premeu breument el botó per baixar el volum.
Gestió de trucades
- Respondre/Finalitzar la trucada: Premeu el botó multifunció una vegada.
- Rebutja la trucada: Manteniu premut el botó multifunció durant 2 segons.
- Torna a marcar l'últim número: Premeu dues vegades el botó multifunció.
Control de cancel·lació activa de soroll (ANC).
To activate or deactivate the Active Noise Cancellation feature, locate the dedicated ANC button (often on one of the earcups, as indicated in the video description). Press this button to toggle ANC on or off. You may hear a slight change in ambient sound when toggling this feature.
Manteniment
- Neteja: Feu servir un drap suau i sec per netejar els auriculars. No utilitzeu productes de neteja abrasius ni dissolvents.
- Emmagatzematge: When not in use, store the headphones in their protective carrying case to prevent damage. Avoid exposing them to extreme temperatures or humidity.
- Cura de la bateria: Per allargar la durada de la bateria, eviteu descarregar completament els auriculars amb freqüència. Carregueu-los regularment, fins i tot si no els feu servir constantment.
- Resistència a l'aigua: The headphones are water resistant. However, avoid submerging them in water or exposing them to heavy rain.
Resolució de problemes
| Problema | Causa possible | Solució |
|---|---|---|
| Els auriculars no s'engeguen. | Bateria baixa. | Carregueu completament els auriculars amb el cable USB-C proporcionat. |
| No es pot emparellar amb el dispositiu. | Auriculars no en mode d'emparellament; Bluetooth del dispositiu desactivat; massa lluny del dispositiu. | Ensure headphones are in pairing mode (flashing indicator light). Turn on Bluetooth on your device. Move headphones closer to the device (within 30 feet). Forget previous pairings on your device and try again. |
| Sense so o amb un volum baix. | Volum massa baix; auriculars no connectats; sortida d'àudio incorrecta seleccionada al dispositiu. | Increase volume on both headphones and connected device. Reconnect headphones. Check device's audio output settings. |
| ANC buzzing sound. | Interference or a specific frequency interaction. | Try toggling the ANC feature off and on. If the issue persists, contact customer support. |
| Headphones feel loose or uncomfortable. | Diadema no ajustada correctament. | Adjust the headband to ensure a snug and comfortable fit over your ears. |
Especificacions
| Característica | Detall |
|---|---|
| Nom del model | OVHDBKZ |
| Control de soroll | Active Noise Cancellation (-20dB Reduction) |
| Tecnologia de connectivitat | Wireless, Bluetooth V5.3 |
| Interval Bluetooth | Fins a 30 peus |
| Durada de la bateria | Up to 22 Hours (with ANC) |
| Temps de càrrega | 3 hores |
| Conector d'auriculars | 3.5 mm Jack, USB C Charging |
| Resposta de freqüència | 20 Hz - 20,000 Hz |
| Sensibilitat | 100 dB |
| Impedància | 40 ohms |
| Mida del controlador d'àudio | 40 mil·límetres |
| Tipus de control | Control tàctil, botó |
| Col·locació de l'orella | On Ear (Form Factor: Over Ear) |
| Material | Plastic (Headphones), Fabric (Carrying Case) |
| Nivell de resistència a l'aigua | Resistent a l'aigua |
| Pes de l'article | 1.38 lliures |
| UPC | 080068071303 |
Garantia i suport
Garantia de 90 dies
Sentry Industries offers an extensive 90-day warranty on all products. This guarantee provides free replacement for defective or damaged products within 90 days of purchase.
Atenció al client
Sentry Industries is an American company with over 60 years in business. For assistance or inquiries, a customer support line is operated out of our New York office to ensure you receive the help you need.
For more information, visit the official SENTRY store: SENTRY Store on Amazon





