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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

  • TypeBehind the Neck
  • ColorWhite
  • Driver Unit9.7mm
  • Frequency Response20Hz-20KHz
  • THD< 0.5 % (1 kHz, 100 dB SPL)
  • Input Impedance28 ohms
  • 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.

Highlights

  • 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

Specifications

BrandSennheiser
ModelCX 150BT
TypeBehind the Neck
ColorWhite
Driver Unit9.7mm
Frequency Response20Hz-20KHz
THD< 0.5 % (1 kHz, 100 dB SPL)
Input Impedance28 ohms
Sensitivity110 dB (1 kHz/0 dB FS)
Ear CouplingCanal
Weight13g
Wireless TypeBluetooth
BatteryBuilt-in rechargeable lithium-polymer battery: 3.7 V, 100 mAh; USB charging: 5V
Operating TimeUp to 10 hours
Charge Timeapprox 1.5 hours
Microphone Sensitivity-42 dB V/Pa
Package ContentsCX 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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