Sennheiser CX 400BT In-ear Bluetooth Headphones
Inside the box
Under the hood
Type
In-ear headphones
Codecs
AAC, aptX, SBC
Battery
Up to 7+13h
Sensors
N/A
Connections
USB-C
Key features
Premium sound, impressive soundscapes thanks to the dynamic 7mm audio drivers from Sennheiser, built-in equaliser, customisable controls for music, calls or voice assistant, minimalistic design and stylish comfort.
Noise canceling
Passive noise cancellation
Wireless charging
No
Integrated microphone
Yes
Intelligent functions
Touch and voice control
Water/splash resistant
N/A
Frequency response, Sound pressure level & Impedance
<0.08% (94dB), 5-20000Hz
Frequently asked questions
You can rent for 1, 3, 6, 12, or 18+ months.
When your rental period is over, you can return your device for free, or keep renting for the same price every month. You can also switch to a longer rental period anytime.
Our rentals are flexible, so you can enjoy tech at your own pace. Learn more about how renting works.
We want you to enjoy our products as though they were yours. Small scratches and normal signs of use will be cleaned after return for free. There are no charges for device errors from the manufacturer.
In case of severe damage, Grover Care covers up to 90% of damages for all rental categories. Add Grover Care to your rental for better protection.
Check out our example photos of normal signs of use that we repair for free and also photos of more severe damage. Learn more about Grover Care.
You can return your device for free when your minimum rental period ends.
You just need to reset the device and remove any data. This way, we can rent the device safely to the next person. Then print out the shipping label, return the device, and your monthly payments will be stopped.
You can drop the device off at any post office or drop-off point of the shipping provider shown on the return label. Learn more about returns.
When you place an order, our algorithm checks your data to make sure you're a real person. We also complete a quick automatic credit check. This type of credit check is recorded on your credit report but doesn't have an impact on your credit rating.
If your order is declined, you can request a human review of this automated decision.
You can find further information on why and how we do credit assessments in Section 2.2. of our privacy policy.
If you change your mind and your order hasn’t been processed yet, you can cancel it in your account.
If the order has been processed, we can’t stop it from being shipped. But you can contact our support team and they’ll tell you how to proceed.
If your order has already been delivered, you can contact our support team and revoke your order for free within 14 days after delivery. Any delivery fee is not refunded. Learn more about our cancellation policy.
If you rent with Grover Business, there's no 14 days revocation period. But you can contact our business support and ask for a device exchange.
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