CMF Clip Pro B189 Open-Ear Bluetooth Headphones, Light Grey

Grey: CMF BY NOTHING Clip Pro B189 are clip-on open-ear wireless headphones with Bluetooth 5.4, a claimed 10-hour listening time per charge and a charging case. The listing also promotes a smart dial, dual-device connectivity and a lightweight design, but customer feedback is mixed on sound and fit.

At a glance

Clip-on open-ear design, with an app-promoted Smart Dial for playback and volume control.
The listing claims up to 10 hours of playback on a charge and 32.5 hours in total with the case.
Dual-device connectivity is claimed for switching between two connected devices.
Nothing X app features are listed, including EQ options and an anti-leakage mode.

Price

£59.00Save 25%

Reference price: ~~£79.00~~

Price checked: 12 Nov 2026

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Pros and cons

Pros

Open-ear clip-on styling may suit listeners who prefer not to use conventional in-ear earbuds.
Dual-device connectivity and dial-based controls are useful for switching between devices and making adjustments.
A quick-charge claim says 10 minutes provides up to 4 hours of playback.

Technical specifications

25 specifications

Identity
Brand	CMF BY NOTHING
Model	B189
Colour	Light Grey

Connectivity and controls
Wireless connection listed	Wireless
Bluetooth version	5.4
Control methods listed	Touch
Dual-device connectivity	Dual-Device Connectivity

Audio
Form factor	In Ear
Ear placement	On Ear
Driver type	Dynamic Driver
Driver size in listing details	10.08 Millimetres
Driver size in feature copy	10.8mm
Impedance	16 Ohms
Noise control listed	Sound Isolation

Power and battery
Battery life listed	10 Hours
Single-charge playback claim	up to 10 hours
Total playback claim with case	32.5h total
Charging time listed	70 Minutes
Quick-charge claim	10 Mins = 4 Hours

Dimensions and installation
Weight listed	50.65 Grams
Per-earbud weight claim	5.92g

Materials and protection
Water resistance listed	Water Resistant
Enclosure material	Plastic Thermoplastic Elastomer (TPE)

Other listed details
Headphone jack	Without Headphone Jack
Charging/interface connection	USB Type C

What to know before buying

Listing details to confirm

Listing details are inconsistent: form factor is given as In Ear while the title and features describe open-ear clip-on headphones, controls are described as both touch and a physical Smart Dial, and driver size appears as both 10.08 Millimetres and 10.8mm. The listed 10-hour battery life and feature copy's up-to-10-hour per-charge claim may describe the same use but are not fully reconciled. Confirm the selected listing's configuration and claims before buying.

What’s in the box

User manualIncluded
CMF Clip ProCheck selected pack
User GuideCheck selected pack
How To Wear guideCheck selected pack

Check which accessories are included in your selected pack before buying.

Who is it for?

A good fit for

Listeners looking for clip-on open-ear headphones with wireless Bluetooth connectivity.
People who want to connect two devices and use a dial-style control, subject to confirming the control configuration.

Less suited to

Buyers who need consistently secure fit or predictable sound based on customer reports, since experiences are mixed.
Anyone seeking a wired headphone connection, as the listing says there is no headphone jack.

CMF Clip Pro B189 Open-Ear Bluetooth Headphones, Light Grey · photo 2 — Additional product photo 2

Customer reviews on Amazon

4 / 5 · 90 ratings

5 stars55%55%
4 stars20%20%
3 stars8%8%
2 stars7%7%
1 star10%10%

Customer feedback highlights the design, lightweight feel and dial as positives. Sound quality and fit are mixed, including disagreement about whether the clips stay secure or suit different ear sizes. That matters especially for listeners planning exercise or extended wear. The overall ratings lean positive, but the spread includes lower ratings and does not explain their reasons.

Positive themes

Customers praise the design and lightweight feel.
Customers appreciate the dial.

Mixed feedback

Sound quality receives mixed feedback, with some finding it impressive and others finding it lacking.
Fit and security are mixed, with reports ranging from staying in place to sliding around.

Frequently asked questions

How long does the Clip Pro play on a charge?

The listing claims up to 10 hours of continuous playback per charge and 32.5 hours total with the case. Actual listening time is not independently established here.

Can it connect to two devices?

The feature copy claims dual-device connectivity, allowing connection to two devices. The listing does not establish all device-specific behaviour.

Is the control a touch surface or a dial?

The listing conflicts: details label the controls as touch, while feature copy describes a Smart Dial and physical button. Confirm the selected version's controls before buying.

What do customers report about fit and sound?

Feedback is mixed on both sound quality and secure fit. Some report a secure fit while others say the earbuds slide, and customers disagree on fit across ear sizes.