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CMF by Nothing Buds 2 vs Realme Buds Air 7 Pro vs OnePlus Buds 4

cshadmin

- Updated: 29th Dec 2025, 15:06 IST

Key Feature Comparison

At a Glance

Show differences only

40000 Hz

20 Hz

40000 Hz

15 Hz

460 mAh

55 Hours

530 mAh

48 Hours

530 mAh

45 Hours

Wireless

In Ear Canalphone, In the Ear

Wireless

In Ear Canalphone, In the Ear

Wireless

In Ear Canalphone, In the Ear

10 meter

Auto Pairing

10 meter

Auto Pairing

10 meter

Auto Pairing

Detailed Specs

General

Brand

CMF

realme

OnePlus

Model

Buds 2

Buds Air 7 Pro

Buds 4

Price

Rs. 2,699

Rs. 5,499

Rs. 5,999

Price Status

Confirmed

Market Status

Available

Compatible Devices

Mobile Phone, PC, Tablet

Box Contents

Earbuds, Charging Case, USB Cable Type C, User Manual, Warranty Card

Warranty

1 Year

Launch Date

27-May-25

8-Jul-25

Design

Type

Wireless

Design

In Ear Canalphone

Fit

In the Ear

Open or Closed Back

Closed Back

Water Resistant

Yes, IP55 rating

Performance

Driver Type

Dynamic Driver

Max Frequency Response

40000 Hz

Min Frequency Response

20 Hz

15 Hz

Physical Design

Eartip Size

Large, Medium, Small

Weight

51 gm

49 gm

Dimensions

Eartips :33.4 x 22.8 x 20.6 mm Carrying case :53.3 x 53.3 x 23 mm

Eartips :31 x 24.2 x 20.6 mm, Carrying case :65.4 x 52.4 x 25.3 mm

Colours

Orange, Light Green, Dark Grey

Fiery Red, Glory Beige, Metallic Grey, Racing Green

Zen Green, Storm Grey

Foldable Design

Yes

Features

Noise Reduction

Yes

Noise Cancellation

Yes

Active Noise Cancellation

Replaceable Earbuds

Yes

Call Control

Answer / End

Music Control

Volume Control

Connectivity

Bluetooth

Bluetooth Version

5.4

Bluetooth Profile

A2DP, AVRCP, HFP

A2DP, AVRCP,HFP

Bluetooth Range

10 meter

Bluetooth Features

Auto Pairing

Microphone

Yes

Battery

Battery Capacity

460 mAh

530 mAh

Playback Time

55 Hours

48 Hours

45 Hours

Charging Type

USB Type-C

Charging Time

93 Minute

2 Hours

80 Minute

Battery Type

Li-ion

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