Sennheiser ACCENTUM Wireless Over-Ear Headphones

Product Overview

The Sennheiser ACCENTUM are circumaural wireless headphones designed for high-quality audio experiences. They feature active noise cancellation, Bluetooth connectivity, and a comfortable over-ear design.

Diagram Description: The headphones feature earcups with 'R' and 'L' markings, a padded headband with continuous adjustment, microphones for calls and ANC, an LED indicator, and a USB-C port for charging and data transfer.

Important Safety Instructions

⚠️ Please read these instructions carefully before use.

• Always keep this manual with the product.
• Do not use if the product is visibly damaged or emits unusual noises.
• Use only where wireless transmission is permitted.
• Protect your hearing from excessively high volumes. Avoid prolonged listening at high volumes to prevent hearing damage.
• The product generates magnetic fields that may interfere with pacemakers or other implants. Maintain a minimum distance of 10 cm (4 inches) from such devices.
• Keep the product, packaging, and accessories out of reach of children and pets to prevent accidents.
• Do not use in situations requiring special attention, such as while driving, as ANC may mask ambient sounds.
• Keep the product dry and avoid extreme temperatures. Normal operating temperature is between 0 and 40 °C (32 to 104 °F).
• Do not immerse in liquid.
• Do not cover the ANC microphone openings, as this can cause noise or affect ANC performance.
• Use only supplied or recommended accessories.
• Clean with a soft, dry cloth only.
• Lithium Battery Safety: Improper use can lead to battery leakage, explosion, fire, or health hazards. Use only recommended batteries and chargers. Do not charge unattended or expose to high temperatures or fire.
• Dispose of defective products, including batteries, at designated collection points.

Data Collection and Firmware Updates

The product stores individual settings like volume and Bluetooth connection data. This data is used solely for product operation and is not transmitted to Sonova Consumer Hearing GmbH or third parties. Firmware can be updated via the Sennheiser Smart Control app using an internet connection. Data transmitted for updates includes hardware identifiers, firmware version, OS version, and app version, used only for the update process.

Headphone Use in Humid Environments

Avoid contact with moisture. Keep headphones dry. Do not use in rain, snow, showers, pools, saunas, or during activities with high humidity. Do not store with damp items or in containers that can cause condensation. Ensure the charging port is dry before charging. If headphones get wet, dry them with a cloth and let them air dry for at least 24 hours before use.

Proper Use / Responsibility

These headphones are designed for wireless audio communication and music playback via Bluetooth. Any use not described in the manual is considered improper. Sonova Consumer Hearing GmbH is not liable for damages resulting from misuse or improper use of the product or its accessories. They are also not responsible for damage to USB devices not conforming to USB specifications or for connection interruptions due to battery issues or exceeding Bluetooth range.

Supplied Material

• ACCENTUM Over-Ear Headphones
• USB Cable with USB-C and USB-A connectors (approx. 1.2 m)
• Quick Guide
• Safety Guide
• Compliance Sheet

Online Resources: Detailed manual and information available at www.sennheiser-hearing.com/download. The Sennheiser Smart Control app can be found at www.sennheiser-hearing.com/smartcontrol. Accessories can be found at www.sennheiser-hearing.com/accentum. For support, contact your local Sonova Consumer Hearing distributor via www.sennheiser-hearing.com/service-support.

Getting Started

1. Charge the Battery

   The battery is not fully charged upon delivery. Charge it completely before first use. The charging process takes approximately 3 hours. The LED indicator shows the charging status.

   Diagram Description: Shows connecting the USB-C end of the cable to the headphones and the USB-A end to a power source.

2. Connect Headphones to a Bluetooth Device

   Pair the headphones with your smartphone via Bluetooth. The process is called pairing.

   Diagram Description: Illustrates the ON/OFF button being held for 5 seconds, followed by a Bluetooth connection icon and a checkmark indicating successful connection.

3. Smart Control App for Your Smartphone

   Download and install the Sennheiser Smart Control app to access all headphone functions and settings, such as adjusting sound profiles via the equalizer.

   Diagram Description: Shows app icons for Apple App Store and Google Play, with a QR code for downloading the app.

4. Wear the Headphones and Adjust the Headband

   For optimal sound quality and comfort, adjust the headphones to fit your head size. Ensure the earcups cover your ears comfortably and the headband sits evenly.

   Diagram Description: Shows how to adjust the earcups up or down on the headband for a secure and comfortable fit.

Using the Headphones

Battery Information and Charging

The headphones have an integrated battery. A full charge takes about 3 hours. The charging time may vary. Charge fully before first use. The LED indicator shows charging status. Voice prompts like "Recharge headset" will alert you when the battery is low. Charging can be done while listening to music or making calls, though it may take longer.

Diagram Description: Shows headphones connected via USB-C to a power source, with LED indicators for charging status (red for 0-20%, yellow for 20-90%, green for 90-100%).

LED Indicators During Charging:

• Red flashing: Battery 0% - 20%
• Yellow flashing: Battery 20% - 90%
• Green flashing: Battery 90% - 100%
• Green solid for 5 minutes, then off: Fully charged

If the LED does not light up, clean the charging port or charge the headphones for at least 30 minutes until the LED lights up. Charging may take longer if the battery is completely depleted.

Connecting Headphones to a Bluetooth Device

To use wireless Bluetooth, you must register your headphones with your device (e.g., smartphone). This is called pairing. Refer to your Bluetooth device's manual if steps differ. When connecting for the first time, headphones automatically enter pairing mode.

Diagram Description: Shows a Bluetooth symbol and devices being paired.

Bluetooth Connection Information

The headphones are compatible with Bluetooth 5.2. They support high-quality audio codecs like aptX HD and AAC for superior sound. The headphones can remember up to six paired Bluetooth devices and automatically connect to the last two used. Audio playback is only possible from one device at a time.

Diagram Description: Illustrates multiple Bluetooth devices (labeled 1-6) connecting to the headphones, with solid lines indicating connected devices and dashed lines indicating paired but not currently connected devices.

Pairing Headphones with a Bluetooth Device

When connecting for the first time, the headphones automatically enter pairing mode.

1. Bring headphones close to the Bluetooth device (max. 20 cm).
2. Press and hold the main button for 3 seconds to turn on. The LED lights up white for 5 seconds.
3. Press and hold the main button for 5 seconds to enter pairing mode. LEDs flash white and red alternately.
4. Activate Bluetooth on your device.
5. Search for Bluetooth devices on your device.
6. Select "ACCENTUM" from the list. If prompted, enter PIN "0000".
7. On successful pairing, you will hear "Pairing successful" and "Connected". The LED flashes white 3 times.

Diagram Description: Step-by-step visual guide showing phone screen with Bluetooth settings, holding the button, selecting the device, and confirmation.

If pairing fails within 2 minutes, the mode ends, and the headphones enter standby. Repeat the steps if necessary.

Changing Bluetooth Connection

Use the Smart Control app to switch audio connections between paired Bluetooth devices. The app lists paired devices, allowing you to select a new connection. Bluetooth Low Energy is used for app communication.

Disconnecting Headphones from a Bluetooth Device

Interrupt the connection via your Bluetooth device's menu. You will hear "No connection", and the headphones enter standby mode.

Installing the Smart Control App

Download the Sennheiser Smart Control app from the Apple App Store or Google Play to access full features. Connect your smartphone to the headphones via Bluetooth and follow the in-app instructions.

Diagram Description: Shows app store icons and a QR code for download.

Turning the Headphones On/Off

Press and hold the main button for 3 seconds to turn on. The LED lights up white for 5 seconds. If Bluetooth is active and a paired device is available, the LED flashes white 3 times and you hear "Connected". If Bluetooth is off, you only hear a tone.

To turn off, press and hold the main button for 3 seconds. The LED flashes red 3 times, and the headphones turn off.

Diagram Description: Shows pressing the main button for 3 seconds, with an LED indicator and a 3x red flash.

Wearing the Headphones and Adjusting the Headband

For optimal sound, ANC, and comfort, adjust the headband so it sits centrally on your head. Ensure the earcups comfortably cover your ears and provide a uniform seal. The earcups have 'R' and 'L' markings inside.

Diagram Description: Shows adjusting the earcups on the headband for a proper fit, ensuring the earcups cover the ears.

Checking Battery Status

Battery status can be viewed on your smartphone or in the Smart Control app. You can also hear battery status via voice prompts by pressing and holding the music/call control button for 3 seconds. Voice prompts include "Recharge headset" (low battery) or "More than xx % battery left" (percentage).

Diagram Description: Shows pressing a button for 3 seconds and a visual representation of a battery level indicator.

Adjusting Volume

⚠️ Warning: High volume for extended periods can cause permanent hearing damage. Set a low volume before wearing headphones and switching audio sources. Avoid constant high volumes.

Use the volume control buttons on the headphones or your connected Bluetooth device to adjust volume for music and calls. You will hear "Volume max" or "Volume min" when the limits are reached. The headphones reset to a moderate volume when turned off.

Diagram Description: Shows pressing volume up (+) and volume down (-) buttons on the earcup.

Active Noise Cancellation (ANC) and Transparency Mode

The closed-back design provides passive noise isolation. Active Noise Cancellation (ANC) further reduces ambient noise. Transparency mode allows you to hear external sounds or conversations without removing the headphones. You can switch between ANC and Transparency mode by pressing the main button twice. The Smart Control app allows customization of ANC levels and Transparency mode features like automatic audio pausing.

Diagram Description: Shows pressing the main button twice (2x) to switch modes.

ANC Adjustments via Smart Control App:

• Wind Noise Reduction: Can be turned off (Off) or set to automatically adjust for wind or movement noise (On).

Music Control

Play/pause music by pressing the music/call control button once. Double-press to pause music and enter standby mode. Skip to the next track by double-pressing the button. Go to the previous track by triple-pressing the button.

Diagram Description: Shows button presses for play/pause, pause/standby, next track, and previous track.

Making Calls

Answer/end calls by pressing the music/call control button once. Reject a call by pressing and holding for 2 seconds. To manage multiple calls, press twice to reject a second incoming call while on an active call, or press twice to switch between active and held calls.

Diagram Description: Shows button presses for answering, ending, rejecting, and holding calls.

Microphone Mute

Activate microphone mute by pressing the main button once during a call. You will hear "Mute on". Press the main button again to unmute; you will hear "Mute off".

Diagram Description: Shows pressing the main button once (1x) for mute.

Sidetone Function

The Sidetone function allows you to hear your own voice during calls, improving call comfort. This can be activated and adjusted via the Smart Control app.

Voice Assistants

Activate your device's voice assistant (e.g., Siri, Google Assistant) by pressing the main button once. If no voice assistant is available, voice dialing may be activated. Press the main button again to cancel.

Diagram Description: Shows pressing the main button once (1x) to activate voice assistant.

Sound Effects / Equalizer

Use the Smart Control app to adjust sound effects and equalizer settings. You can choose from factory presets, sound modes (like Bass Boost), or create your own custom settings. The "Sound Check" function in the app helps you create personalized EQ presets.

Bluetooth / Airplane Mode

To disable wireless connections (e.g., during flight), press the main button 5 times. You will hear "No connection". The Bluetooth connection is disabled. To re-enable Bluetooth, press the main button 5 times again. You will hear "Connected".

Diagram Description: Shows pressing the main button 5 times (5x) to turn Bluetooth off/on.

Connecting Headphones via USB Cable

Connect the headphones to a Mac/PC or mobile device using the provided USB cable to play audio directly. The headphones also charge automatically when connected via USB. Ensure Bluetooth is disconnected before connecting via USB. Set "ACCENTUM" as the default audio output/input device in your system settings.

Storing or Transporting the Headphones

CAUTION: Sharp objects can damage the product. Avoid storing or transporting headphones with sharp items. Handle with care and store in a clean, dust-free location.

Care and Maintenance

Liquids can damage the electronic system. Keep liquids away from the product. Never use cleaning agents or solvents. Clean parts with a soft, dry cloth. To clean the charging port, blow into it or gently use a dry, soft brush or interdental brush for stubborn dirt.

Replacing Ear Pads

Ear pads should be replaced regularly for hygiene. Replacement pads can be purchased online or from authorized distributors. Remove the old ear pad by gently pulling it off the earcup. Attach the new ear pad by pressing it onto the earcup until it clicks into place. Ensure the correct left (L) and right (R) ear pads are used.

Diagram Description: Shows how to remove an ear pad and how to attach a new one, with L and R markings on the earcups.

Built-in Battery Information

Sonova Consumer Hearing GmbH warrants the rechargeable batteries at the time of purchase. If a battery appears damaged or shows charging errors, discontinue use, disconnect from power, and contact your dealer. Do not return faulty products with batteries spontaneously. Dispose of the product with its built-in battery separately at the end of its life.

Installing Firmware Updates

Firmware updates are available free of charge via the Sennheiser Smart Control app. Connect your headphones to your smartphone, launch the app, and follow the on-screen instructions to install the latest firmware for optimal performance.

Frequently Asked Questions / In Case of Anomaly

If an anomaly occurs, follow these steps:

1. Press and hold the main button for 15 seconds for a reset.
2. Connect headphones to the Smart Control app to install the latest firmware.
3. Reset headphones to factory settings.
4. Check the FAQ list for solutions.
5. Contact your Sonova Consumer Hearing distributor for assistance.

FAQ: For a list of frequently asked questions and solutions, visit the ACCENTUM product page at www.sennheiser-hearing.com/download.

Persistent Issues: If problems persist or are not covered in the FAQ, contact your Sonova Consumer Hearing distributor.

Bluetooth Range: Wireless transmission is limited by Bluetooth range, typically up to 10 meters (33 feet) in ideal conditions. If you leave the range, the connection may be lost. Re-entering the range will automatically re-establish the connection.

Performing a Reset

If headphone functions are affected, perform a reset. Individual settings like pairing information are not deleted. Press and hold the main button for 20 seconds. You will hear a confirmation tone.

Diagram Description: Shows pressing the main button for 20 seconds.

Deleting the Bluetooth Pairing List

The Bluetooth pairing list can be deleted using the Smart Control app. Follow the app's instructions.

Resetting Headphones to Factory Settings

To reset to factory settings, connect the headphones to a device with the Smart Control app installed. Select "Factory settings" in the app's settings and follow the instructions.

Technical Data

Manufacturer Declarations

Warranty

Sonova Consumer Hearing GmbH offers a 12-month warranty for this product. Full warranty conditions are available online at www.sennheiser-hearing.com/warranty or from your Sonova Consumer Hearing distributor.

Limited Availability of Spare Parts and Repair Services

For warranty terms, including a list of covered products, visit www.sennheiser-hearing.com/warranty-conditions.

Compliance with Directives

The product complies with general product safety regulations (EU) 2023/988 and country-specific sound volume limits.

EU Declaration of Conformity

The product is in conformity with the Battery Regulation (EU) 2023/1542 and the RoHS Directive (2011/65/EU). The full EU Declaration of Conformity is available in English at www.sennheiser-hearing.com/download.

UK Declaration of Conformity

The product is in conformity with RoHS (2012) and Radio Equipment Regulations (2017).

Disposal Information

The crossed-out wheeled bin symbol indicates that this product, its battery, and packaging must not be disposed of with household waste. Follow local regulations for separate disposal and recycling to protect health and the environment. Batteries, especially lithium-ion, require special handling due to potential risks.

Trademarks

Apple, the Apple logo, Siri, App Store, Android, Google Play, Bluetooth® word mark and logos, and Qualcomm® aptX™ are trademarks of their respective owners.