Product code: 89730504
Enjoy the superior sound of Sennheiser with the CX 400BT True Wireless earbuds. You can tailor the audio to your taste with customisable touch controls, and they stay comfortable and charged all day with ergonomic design and a total of twenty hours battery life with their sleek charging case.
Superior Sennheiser sound & control
The bespoke speaker drivers of the CX 400BT deliver high fidelity sound with deep bass, natural mid-range, and clear and detailed treble. Perfect whether you’re enjoying calming tunes or uptempo beats. You can also personalise your listening with built-in equalisers to tailor the sound to precisely your taste.
Touch sensitive control
Customizable touch controls on both earbuds make it easy to stay connected, whether you’re on the beat, on the ball, or on-call. A touch sensitive interface gives fast access to voice assistants like Siri and Google Assistant, as well as intuitive control of your music and calls.
Premium sound on any device
Whether you’re listening on iOS or Android, you’ll always receive the premium sound quality of these earbuds. Supporting a wide range of audio codecs, including SBC, AAC and aptX technologies, outstanding sound is assured on any mobile device.
Long battery life
You’ll never miss a beat throughout the day with a total of 20 hours of battery life. They last for 7 hours off a single charge, with a further 13 hours’ worth stored in their sleek, small and compact charging case.
Minimalist design & stylish comfort
The CX 400BT have an ergonomic design created for all-day wearing comfort. Ideal whether you’re enjoying a long playlist, a gripping audiobook, or an extended phone call.
These True Wireless headphones are compatible with all smart devices with Bluetooth, including from Apple, Samsung and Google, and other Android smart phone brands.
- Accessories Included
- Charging case, USB-C Charging cable, Silicone ear adapter sets (XS, S, M, L)
- Bluetooth Enabled
Bluetooth is a wireless way of transferring data between electronic devices over short distances
- Bluetooth, NFC
- Packaged: H24.5 x W20 x D27.9cm. Unpackaged: H11.5 x W4.7 x D20.2cm
- Manufacturer Part Number (MPN)
- Microphone Remote
- Model name / number
- CX 400BT
- NFC enabled
Devices with NFC (Near Field Connection) can be tapped together to establish a wireless connection for sending or streaming files and other data
- Noise Cancelling
Models which have microphones built into the headphones which produce signals to reverse outside noises, cancelling them out. Perfect for cutting out the constant low drone caused by jet or train engines on your travels.
- Noise Reduction
Either flexible rubber sphere-like tips which slot nicely into your ear canal providing a seal, or cupped designs which surround and seal your ear from the outside world, they effectively eliminating ambient sounds, and trap your music in your ear
- Playback Controls
Controls that allow you to alter the playback or answer calls on compatible devices. Please note: not all controls will work with every device.
- Power Supply
- Rechargeable battery
Unpackaged weight of the product
- Wi-Fi enabled
Delivery & returns
- Standard Delivery
UK delivery within 5 days, 7.30am - 6pm, Monday to Saturday. Free on orders over £50, otherwise £3.50.
- Click & Collect
Free on orders over £30, £2 if you spend less. Choose a collection day at checkout, next day available at some locations. Available at Waitrose, selected John Lewis shops, Co-op branches and Booths stores.
Collect your delivery from over 7000 local convenience shops within 3 days.
Order before 4pm Sunday - Friday for collection the next day.
- Next or Named Day Delivery
Delivery on the day of your choice, 7.30am - 6pm, 7 days a week. Order by 4pm for delivery the next day.
You'll receive a text on the morning of delivery with a 1-hour delivery window.
- Morning Delivery
Named morning delivery by 10.30am, available 7 days a week. Order by 4pm for delivery the next morning.
- International Delivery
Not available for this item
Return small or medium items by post or to John Lewis & Partners and Waitrose & Partners shops.
Large items (delivered by two people, such as appliances and furniture) can be returned using our Home Collection service.
You can also return a Click & Collect order to where you collected it.