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CMF by Nothing

CMF by Nothing Buds 2

Name: CMF by Nothing Buds 2
Brand: CMF by Nothing
SKU: B0DXP6PPT8
Price: 34.00 USD

Current price · Amazon US

$34

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Price last checked 1d ago

Noise Isolation / ANC & sound

6/ 10

0.010.0

A 6 puts its noise isolation / ANC in the top half of wireless earbuds we've measured.

Measured on 133 of the 271 we've cataloged.

4.8/ 5

SoundMDAQS Overall

4.8

1.05.0

A 4.8 puts its audio quality in the top half of wireless earbuds we've measured.

Measured on 64 of the 271 we've cataloged.

Key specs

Battery Life Earbuds

13.5 hAbove average

13.5 h

3 h16 h

above average for wireless earbuds — based on 243 of 271 we've cataloged.

Battery Life With Case

55 hAbove average

35.5 h

7 h60 h

above average for wireless earbuds — based on 245 of 271 we've cataloged.

IP Rating

IP55

IPX433%IP5516%IP5415%IPX512%

IP55 appears on 16% of the 244 wireless earbuds we've cataloged (of 271).

Noise Cancellation Type

ActiveMost common

Active61%Passive14%None9%Adaptive8%

Active is the most common — on 61% of the 172 wireless earbuds we've cataloged (of 271).

Battery

Battery Life Earbuds: 13.5 h
Battery Life With Case: 55 h
Full Charge Minutes: 10 min
Battery Life Anc On: 23 h
Battery Life Wireless: 9 h
Charging Case Capacity: 50 mAh
Earbud Capacity: 50 mAh
Fast Charging: Yes

Build

IP Rating: IP55
Sweat Resistance: Yes
Water Resistance: Yes
Material Case: Plastic
Material Chassis Primary: Plastic

Sound

Noise Cancellation Type: Active
Ambient Levels: Variable
Ambient Mode: Yes
Anc Depth: 48 dB
Anc Modes: Off,anc,transparency
Driver Count: 1
Driver Size: 11 mm
Driver Type: Dynamic
Frequency Response: 20-20000 Hz
Frequency Response High Hz: 20000 Hz
Frequency Response Low Hz: 20 Hz
Frequency Response Signature: Balanced
Adaptive Anc: Yes
Impedance: 16 Ω
Passive Isolation: 20 dB

Connectivity

Bluetooth Version: 5.3
Bluetooth Codec: AAC, SBC
Bluetooth Range: 10 m
Connection Type: Bluetooth
Headphone Jack: No
Latency: 110 ms
Multipoint Devices: Yes - 2 devices

Design

Earbud Form Factor: In-ear
Color Options: Orange, dark gray, light gray
Ear Tip Material: Silicone
Ear Tip Sizes Included: S, M, L
Wearing Style: Deep insert
Weight Per Earbud: 4 g

Features

Certified For: Google Fast Pair
Companion App: Yes
Control Type: Touch controls
Eq Customization: Yes
Find My Device: Find My Device (Google)
Gaming Mode: Standard
Auto Connect: Yes
Auto Pause: Yes
Fitness Tracking: No
Mono Mode: Yes
Spatial Audio: Yes
Voice Assistant Support: Google Assistant

Microphone

Count: 6
Wind Noise Reduction: Yes
Noise Reduction Type: AI-powered
Type: 6 microphone

Release

Date: April 28, 2025
Year: 2025

SoundGuys review

Read the full review ›

SOUNDGUYS rating

8.0/ 10

Recommended

Reviewed byAdam BirneyManaging EditorReviewed May 2025

Noise cancelling8.3

Isolation6.0

Battery life7.7

Comfort & fit8.5

Connectivity8.0

Design7.0

The verdict

The CMF Buds 2 Plus offers impressive audio performance and innovative personalization features at a budget-friendly price. Still, the puzzling removal of the previous model's standout Smart Dial makes this "upgrade" feel incomplete despite technical improvements.

✓What we like

✓Sound quality

✓ANC

✓Bluetooth 5.4 with LDAC

✓Price

✕What could be better

✕No Smart Dial

✕No wireless charging

Read the full SoundGuys review →

Lab data

How we test ›

Objective measurements from the SoundGuys test lab — overlay other models to see how this one compares.

Compare with

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0 of 4 overlay slots used

CMF by Nothing Buds 2SoundGuys Headphone Preference Curve

Measured frequency response (dB) against the SoundGuys house target — the dashed curve. The closer the measured line tracks the target, the more neutral the tuning; peaks ride above the target, dips fall below it.

Frequency response — measurement data

CMF by Nothing Buds 2: frequency response, as measured in the SoundGuys lab. Frequency in hertz.
Frequency (Hz)	Response (dB)
20	8.8
25	8.9
32	9.0
40	8.9
50	8.7
63	7.8
80	6.1
100	3.9
125	2.1
160	0.6
200	0.4
250	0.8
315	1.5
400	0.5
500	-0.9
630	-1.0
800	-0.2
1000	0.0
1250	1.2
1600	4.0
2000	7.3
2500	9.6
3150	9.9
4000	7.5
5000	9.4
6300	4.3
8000	5.6
10000	-3.5
12500	6.4
16000	-5.7
20000	-25.0

CMF by Nothing Buds 2

Passive isolation (dB) with ANC off — how much ambient noise the fit blocks on its own. Higher on the chart means more attenuation.

Passive isolation — measurement data

CMF by Nothing Buds 2: passive isolation, as measured in the SoundGuys lab. Frequency in hertz.
Frequency (Hz)	Attenuation (dB)
21	-3.3
26	-0.8
33	1.1
41	1.2
52	0.8
65	1.9
82	2.0
103	2.6
130	2.6
163	1.7
205	3.6
259	5.0
325	6.2
410	8.7
516	6.8
613	7.3
772	10.2
972	11.5
1220	13.6
1540	15.4
1940	20.2
2440	29.6
3070	29.7
3870	24.3
4870	12.9
6130	21.2
7720	37.8
9720	29.9
12200	29.5
15400	35.8
19400	23.6

CMF by Nothing Buds 2

Total attenuation (dB) with ANC on — passive isolation plus active noise cancelling. Higher on the chart means more attenuation.

Noise cancelling — measurement data

CMF by Nothing Buds 2: noise cancelling, as measured in the SoundGuys lab. Frequency in hertz.
Frequency (Hz)	Total attenuation (dB)
21	9.4
26	17.5
33	16.8
41	20.8
52	26.0
65	27.2
82	32.2
103	33.2
130	30.8
163	24.9
205	30.6
259	25.4
325	23.1
410	17.2
516	16.3
613	19.5
772	23.7
972	22.7
1220	21.0
1540	24.3
1940	32.1
2440	43.1
3070	38.1
3870	23.6
4870	10.8
6130	24.7
7720	33.2
9720	29.8
12200	23.1
15400	37.9
19400	21.9