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Description
In-ear true wireless earbuds with charging case, USB-C cable and four silicone tip sizes. Bluetooth 5.1 links to iOS and Android.
7 mm dynamic drivers support SBC, AAC and aptX for consistent quality across phones. Touch pads manage sound, calls and assistant, while the companion app adjusts EQ and functions.
Features
20-hour total playtime
7 hours per charge plus case top-ups for all-day use.
Fast top-up
10 minutes in the case gives about 1 hour of music.
Secure ergonomic fit
Four tip sizes seal the ear for comfort and passive noise cancelling.
Custom touch control
Personalize taps for music, calls and assistant in the app.
Specifications
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Colour: White
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Driver: 7 mm dynamic
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Battery: Up to 7 hours, up to 20 hours with case
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Bluetooth: 5.1, SBC / AAC / aptX
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In the box: CX 400BT earbuds, charging case, USB-C cable, silicone ear adapters in XS / S / M / L
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Charging time: Approx. 1.5 hours
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Brand: Sennheiser
Customer Reviews
6m***g
VerifiedNice pair
Pleasant sound and comfy enough, happy with it.
e*u
So easy, love listening with these daily.
e****d
VerifiedGood sound for my commute.
q****a
They work fine, nothing special yet.
u*****l
VerifiedSmall case, handy to take along.
q****f
VerifiedLove them, easy to use and sound great.















