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Sennheiser CX Plus True Wireless Earbuds with Active Noise Cancellation (Black)

Regular price $179.95
Sale price $179.95 Regular price
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Product Information

Model: 509188 | UPC: 615104357327


What's In The Box

Product Information

Model: 509188 | UPC: 615104357327

Superior Sound. No Compromise.

When True Wireless sound exceeds every expectation, you’re listening to the CX Plus True Wireless from Sennheiser. They deliver a thrilling, high-quality sound experience with Active Noise Cancellation, effortless smart interaction, and a sleek design for supremely comfortable all-day enjoyment.


  • Sennheiser signature sound
  • Active Noise Cancellation & Transparent Hearing
  • Personalized controls
  • IPX4 splash resistance
  • Up to 24 hours play time

Superior Sound

  • Sennheiser Superior Sound: Powered by Sennheiser’s TrueResponse transducer for high fidelity sound
  • Active Noise Cancellation & Transparent Hearing: Block out noise or gain awareness of external sounds at a touch in any environment
  • Built-in Equalizer and Bass Boost: Adjust the Equalizer and Bass Boost levels for a tailored sound and audio experience

Designed for Full Day Wearing

  • IPX4: Splash resistance for trouble-free use while traveling, commuting, or exercising
  • Compact, Ergonomic Design: With 4 ear adapter sizes to ensure optimal comfort and a secure fit for anyone
  • Battery Life: Up to 8 hours and 24 hours of play back time with on the go charging via the case

A Smarter User Experience

  • Customizable Touch Controls: Personalize touch controls for music, calls, and voice assistant to match individual preference for intuitive operation
  • Independent Earbud Use: Convenient feature enables the left and right earbuds to be used individually or as a pair
  • Noise Reduced Microphones: Crystal-clear voice pickup by dual beamforming mics on each earbud to ensure speech optimized calls and voice assistant access (Siri and Google Assistant)
  • Smart Pause: The earbuds pause and resume playback automatically when taken out or replaced in the ear
  • Connections Management: Bluetooth connections can be easily managed via the Sennheiser Smart Control app


  • General
    • Wearing style: True wireless stereo earphones
    • Ear coupling: Ear canal
    • Connectivity: Bluetooth 5.2 compliant, class 1, 10 mW (Max)
    • Supported profiles: A2DP, AVRCP, HFP
    • Supported codecs: SBC, AAC, aptX™, aptX adaptive™
    • Speaker principle: Dynamic
    • Speaker size: 7mm diameter
    • Speaker frequency range: 5 Hz - 21 kHz
    • Speaker sensitivity: 114 dB SPL (1 kHz / 94 dB)
    • Speaker THD: <0.08% (1 kHz / 94dB)
    • Speaker indepedance: N/A (Active BT headphones)
    • Active noise cancellation: Single mix ANC per earbud
    • Mix principle: MEMS
    • Mix frequency range: 100 Hz - 10 kHz
    • Mic pick-up pattern: 2 mic beamforming per earbud
  • Battery
    • Up to 8 hours of music playtime with earbuds
    • Up to 24 hours overall music playtime with charging case (Test condition: iPhone, mid-volume level, ANC/TH off)
    • Charging time: Approx. 1.5 hours for fully charged; after 10min charging 1 hour of music playtime
    • Battery Type: Built-in Lithium rechargeable batteries, 3.7V left/right earbud; 55 mAh, charging case: 400-420 mAh
    • Power supply: 5V, 600 mAh Max, USB charging via USB-C socket at charging case
  • Packaging
    • Dimensions (H x W X D): 1.6" x 1.3" x 2.3" (42.3mm x 33.8mm x 59mm)
    • Packaging type: Hard box

What's In The Box

  • CX Plus True Wireless Earbuds with Active Noise Cancellation
  • Charging case
  • USB-C charging cable
  • Silicone ear adapter sets (XS/S/M/L)
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