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White behind-the-neck wireless earphones with three-button remote and USB-C cable

Sennheiser

Sennheiser CX 150BT White Bluetooth 5.0 Wireless Headphone

SKU CH-00WY-W5M2P

Wireless in-ear headphones with Bluetooth 5.0, 10-hour battery, USB-C fast charging and two-device pairing

  • Driver size9.7 mm
  • Frequency range20 Hz-20 kHz
  • Headphone style< 0.5 % (1 kHz, 100 dB SPL)
  • Impedance28 ohms
  • Audio sensitivity110 dB (1 kHz/0 dB FS)
  • Wearing styleCanal
  • Bluetooth 5.0 and multi-point pairing keep two devices connected
  • 10-hour battery life with 1.5-hour USB-C fast charging
  • 7 mm drivers deliver 20 Hz–20 kHz frequency response
  • 13 g behind-the-neck design with four ear-tip sizes for secure fit
  • Three-button remote handles calls and music playback

Essential companion for daily listening

The Sennheiser CX 150BT is a lightweight behind-the-neck wireless headphone built for people who want audio on the move without bulk. Weighing 13g, it slips into a pocket or bag and suits commuters, office workers or anyone listening at home. The 9.7mm drivers cover a 20Hz-20KHz frequency response with a sensitivity of 110 dB and THD below .5 %. It is not for buyers who need active noise cancellation, on-ear comfort or a higher water-resistance rating.

Ten-hour battery with USB-C charging

A built-in 3.7 V, 100 mAh lithium-polymer cell delivers up to 10 hours of operating time and recharges in approximately 1.5 hours via the supplied USB-C cable at 5V. Bluetooth 5.0 handles the wireless link with SBC and AAC codec support for stable streaming. The 28 ohm impedance keeps power draw modest during normal music playback and calls. There is no rapid-charge minute claim, wireless charging or replaceable battery option.

Multi-device pairing and four ear tips

Bluetooth multipoint lets the headphones stay connected to two devices simultaneously so you can switch between a phone and a laptop without re-pairing. A three-button inline remote handles calls, volume and track control. The package includes an ear adapter set with XS, S, M and L silicone tips to seal the canal coupling for better isolation and bass response. No carrying case, desktop app or EQ presets are bundled.

How it compares

Measured against everything we stock in Earbuds & Over-Ear Headphones, at today’s prices. Recalculated every night.

Price $21.99
Cheaper than about 57% of the 7,078 comparable items (median $25.99).

Specifications

Product
Brand nameSennheiser
Model nameCX 150BT
Product typeBehind the Neck
Product colorWhite
Audio & video
Driver size9.7 mm
Frequency range20 Hz-20 kHz
Headphone style< 0.5 % (1 kHz, 100 dB SPL)
Impedance28 ohms
Audio sensitivity110 dB (1 kHz/0 dB FS)
Wearing styleCanal
Mic sensitivity-42 dB V/Pa
Connectivity
Wireless technologyBluetooth
Power
Battery packBuilt-in rechargeable lithium-polymer battery: 3.7 V, 100 mAh; USB charging: 5 V
Run timeUp to 10 h
Charging timeApprox 1.5 h
Size & build
Product weight13g
In the box
In the boxCX 150BT earphones
Ear adapter set (XS/S/M/L)
USB-C Charging Cable
Quick guide
Safety guide

Questions about this item

How do I put on the behind-the-neck CX 150BT and which step do people skip?

Loop the flexible band around your neck, choose the XS, S, M or L ear adapter that seals your canal, then insert the 9.7 mm drivers; the step most users skip is testing each tip size for a proper seal.

What part will need replacement first on the CX 150BT?

The built-in 3.7 V, 100 mAh lithium-polymer battery cannot be user-swapped; once it no longer holds a full 10-hour charge the entire earphone must be replaced.

What limit appears first during a long listening session with the CX 150BT?

Continuous playback stops at roughly 10 hours when the 100 mAh cell is depleted, so battery life is the first hard limit under sustained use.

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