To Next PageTo Next Page
Need help?Do you have a question about the Sennheiser CX 400BT True Wireless and is the answer not in the manual?
General| Driver Type | Dynamic |
|---|---|
| Driver Size | 7mm |
| Frequency Response | 5 Hz - 21 kHz |
| Bluetooth Version | 5.1 |
| Bluetooth Codec | SBC, AAC, aptX |
| Charging Port | USB-C |
| Water Resistance | IPX4 |
| Microphone | Yes |
| Touch Controls | Yes |
| Companion App | Sennheiser Smart Control |
| Bluetooth Profiles | A2DP, AVRCP, HFP |
| Battery Life | 7 hours (earbuds), 20 hours (with case) |
| Charging Time | 1.5 hours |
| Wireless Range | 10 meters |
| Weight | 6g per earbud |
| Noise Cancellation | Passive Noise Isolation |
Guidelines to protect hearing from high volume levels and avoid inserting earphones too deep.
Instructions on keeping the product dry, avoiding extreme temperatures, and using approved parts.
Warning about risks like explosion or fire development associated with mishandled rechargeable batteries.
Lists the earbuds, charging case, USB cable, and different sizes of ear adapters.
Provides links for the detailed instruction manual, Smart Control app, and accessories.
Details the LED, buttons, battery, compartments, and magnetic holders of the charging case.
Describes the touch control panel, ear adapters, status LEDs, microphones, and batteries of the earbuds.
Explains LED signals for charging status when earbuds are inserted or not.
Details LED indications for charging status and errors on the earbuds and charging case.
Defines LED signals and voice prompts for pairing, connection, and battery status.
Lists common voice prompts like 'Power on', 'Connected', and 'Pairing successful'.
Instructions on how to wake up and charge the earbuds and charging case.
Guidance on choosing the correct ear adapter size for optimal fit and sound quality.
Steps to establish a Bluetooth connection between the earphones and a device.
Instructions for downloading and installing the Sennheiser Smart Control app on a smartphone.
Details on battery life, charging process, and initial setup recommendations.
Step-by-step guide for charging the earbuds and charging case via USB.
Explains Bluetooth compatibility and the pairing process with devices.
Instructions on how to pair the right and left earbuds with each other.
How to switch connections, disconnect, and manage paired devices via the app.
Guidance on selecting ear adapters and correctly inserting earbuds into the ears.
Procedures for switching the earphones on and off, including automatic idle mode.
How to increase or decrease the volume using the earbud touch controls.
Using the voice assistant, playing, pausing, and skipping music tracks.
Making, accepting, rejecting, and ending calls using the earphones.
Managing auto call acceptance and displaying battery charge status.
Adjusting sound effects, equalizer, voice prompts, and control functions via the app.
Guidelines for storing and transporting the earphones safely in the charging case.
Instructions on cleaning the product using a soft cloth and avoiding liquids.
Steps for removing and attaching new ear adapters for hygiene purposes.
Information regarding battery performance, warranty, and handling defects.
How to download and install firmware updates using the Smart Control app.
Explains behavior when leaving Bluetooth range and how to re-establish connection.
Steps to reset earphones to factory default settings to resolve operational issues.
Detailed steps for performing a factory reset via the charging case or app.
Details the warranty period and where to find current conditions.
States compliance with relevant EU directives for radio equipment.
Information on proper disposal of the product and batteries according to regulations.
Lists registered trademarks and mentions of third-party licenses.
