Product Overview
The cellularline Ozone headset offers a unique open-ear design, utilizing Air Conduction technology to provide audio while maintaining awareness of your surroundings. This true wireless headset is designed for comfort and safety, allowing you to listen to music and make calls without fully isolating yourself. Its adjustable ear cups ensure a precise fit and optimal sound delivery, and with IPX5 certification, it is resistant to sweat and splashes, making it suitable for various activities.
Key Features
- Open Ear Design: Stay connected to your environment while enjoying audio.
- Air Conduction Technology: Speakers direct sound towards the ear without blocking the ear canal.
- IPX5 Certified: Sweat and splash proof for active use.
- Adjustable Ear Cup: Ensures precise sound alignment and comfortable fit.
- Extended Playtime: Up to 54 hours of total playtime with the charging case.

Image: The cellularline Ozone Open Ear Bluetooth Headset shown with its charging case.
Operating Instructions
Wearing the Headset
- Gently place the ear hook over your ear, positioning the speaker unit near your ear canal.
- Adjust the ear cup to ensure the sound is directed precisely into your ear for optimal audio quality and comfort. The adjustable design allows for a secure and personalized fit.

Image: A diagram illustrating the adjustable rotation of the earbud for a customized fit.
Basic Controls
The Ozone headset features intuitive controls for managing audio playback and calls. Refer to the specific button layout on your headset for exact functions.
- Power On/Off: Typically achieved by opening/closing the case or pressing and holding a multi-function button.
- Play/Pause: Single press on the multi-function button.
- Answer/End Call: Single press on the multi-function button during an incoming call or active call.
- Reject Call: Press and hold the multi-function button during an incoming call.
- Volume Control: (If available) Use dedicated buttons or your connected device.
Safety and Awareness
The open-ear design of the Ozone headset is specifically engineered to allow you to hear ambient sounds, enhancing safety in various environments such as public transport, city streets, or offices. This feature ensures you remain aware of your surroundings while enjoying your audio.

Image: A person running outdoors, demonstrating how the open-ear headset allows awareness of surrounding sounds.

Image: A person sitting on a bench, illustrating the ability to listen to people around you while wearing the headset.
Maintenance
Cleaning
- Wipe the headset and charging case with a soft, dry, lint-free cloth.
- For stubborn dirt, slightly dampen the cloth with water. Avoid using harsh chemicals or abrasive materials.
- Ensure charging contacts are clean and dry before placing the headset in the case.
Storage
- Store the headset in its charging case when not in use to protect it and keep it charged.
- Keep the device in a cool, dry place, away from extreme temperatures and direct sunlight.
Water Resistance (IPX5)
The Ozone headset is IPX5 certified, meaning it is protected against low-pressure water jets from any direction. This makes it resistant to sweat and light splashes, but it is not designed for submersion in water. Do not rinse under running water or use while swimming.

Image: The cellularline Ozone headsets shown on a surface with water droplets, highlighting their IPX5 sweat and rain proof capability.