Sennheiser CX 350BT Wireless Earbuds with Bluetooth 5.0

Model: 508382 UPC: 615104340817 Item: 3084

Regular Price: $99.95

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Savings include $30 instant rebate. Offer ends 10/31/2021.

Color: Black - In Stock

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754 Route 309 (Bethlehem Pike) Montgomeryville, PA 18936
  • Mon: CLOSED
  • Tues, Wed, Fri, Sat: 10AM - 5PM
  • Thurs: 10AM - 8PM
  • Sun: CLOSED
(215) 368-8343
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38 Greenfield Avenue, Ardmore, PA 19003
  • Mon: CLOSED
  • Tues, Wed, Fri, Sat: 10AM - 5PM
  • Thurs: 10AM - 8PM
  • Sun: CLOSED
(610) 649-7002
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Winner - The Best Wireless Earbuds of 2021

This product has been selected as one of The Best Wireless Earbuds of 2021. Our Gear Guides are highly-curated selections which represent the best of the best in their category. From televisions and Bluetooth speakers, to marine audio and outdoor speakers—-start (or finish) your shopping journey with our Gear Guides.

Product Information

The CX 350BT wireless earphones are the ideal companion for great sounding audio on the go. With support for the latest wireless technologies including Bluetooth 5.0, AAC and AptX™ Low Latency, the CX 350BT delivers a great listening experience. The Sennheiser Smart Control App facilitates sound customization via its equalizer as well as firmware updates and a podcast mode.

With Sennheiser sound quality, 10-hour battery life and advanced features like voice assistant support, the stylish CX 350BT wireless earphones are the ideal companion for enjoying music and videos on the go without compromise.

A great sound experience is assured by the latest wireless technology, including AAC and AptX™ Low Latency codecs for audio that stays perfectly in sync with onscreen action on compatible devices. Multi-pairing and Bluetooth 5.0 compatibility ensure fast, reliable connectivity with two devices simultaneously.

The CX 350BT ensures a truly personal listening experience thanks to the Sennheiser Smart Control App which allows for sound customization via its equalizer. Along with the personalization features, the app provides battery status, a Quick Guide, firmware updates and a podcast mode for optimized speech.

Smart Control App

Listen to your music the way you want. This free dedicated app for iOS and Android provides an effortless way to control, personalize, update and configure your Sennheiser headphone, headset or soundbar.



  • Impedance: 28 ohms
  • Microphone: MEMS, omnidirectional
  • Frequency response: 17 - 20,000 Hz (- 10 dB)
  • Sound pressure level (SPL): 112 dB (1 kHz/0 dB FS)
  • HD, total harmonic distortion: 0.5 % (1 kHz, 100 dB SPL)
  • Ear coupling: ear-canal
  • Transducer principle: Dynamic
  • Weight: 12 g
  • USB Standard: Type C
  • Battery time: 10 h, SBC
  • Ear pad material: Biocompatible Silicone
  • Supported Profiles: A2DP, AVRCP, HSP, HFP
  • Bluetooth Version: 5.0
  • Codecs: SBC, AAC, AptX, AptX Low Latency

What's in the Box


Customer Reviews for Sennheiser CX 350BT Wireless Earbuds with Bluetooth 5.0

4.0 / 5.0
2 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 3 out of 5
I have heard good things about sennheiser, so I went with these, as they seemed comparable to the boltunes that just crapped out recently. First thing I realized was there is no magnet to clasp the ear pieces around my neck, which is unfortunate. After a few hours of use, I noticed this weird zapping in my ears. It's only happened a few times, but it's like I'm getting shocked, and that isn't pleasant. I was trying to look past this, but the more I use them, the less impressed I have become. I realized my phone is too old to use the app, so I can't utilize that feature. And I am realizing the sound quality just isn't what I had hoped, nor does the volume go up all that much, but I really wouldn't want to with these because it would hurt my ears. I wanted to make these work, as I hate the hassle of returning, but I think I'm going to return these and go back to my trusty boltunes. $20 less, and if they are anything like my last pair, I'll be happy. I imagine sennheiser has great headphones in a higher price range, but this particular pair, I am just not impressed with.
August 27, 2021
Rated 5 out of 5
Very Nice Headphone
These are Great Sounding Headphones.
Comfortable with Clear Voice Prompts.
I bought 2 different pairs at the time
and prefer the sound and comfort of these.
I knew they'd be good because they are
Sennheiser. I wasn't worng.
February 19, 2021
1 year ago


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How long does it take to recharge?
A shopper on Aug 31, 2020
  Thanks for your question. Sennheiser specifications state charging time approx. 2 hours.