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CMF by Nothing Neckband Pro vs Portronics Harmonics Z7 vs OnePlus Buds Z2

cshadmin

- Updated: 9th Sep 2025, 15:47 IST

Key Feature Comparison

At a Glance

Show differences only

20000 Hz

20 Hz

20000 Hz

20 Hz

220 mAh

37 hours (ANC Off), 23 hours (ANC On)

280 mAh

40 Hours

520 mAh

5 Hours

Wireless

In Ear Canalphone, Behind the neck

Wireless

In Ear Canalphone, Behind the neck

Wireless

In Ear Canalphone, In the Ear

10 meter

Auto Pairing

10 meter

Auto Pairing

10 meter

Auto Pairing

Detailed Specs

General

Brand

CMF

Portronics

OnePlus

Model

Neckband Pro

Harmonics Z7

Buds Z2

Launch Date

5-Mar-24

17-Jan-22

Price

Rs. 1,999

Rs. 549

Rs. 4,999

Price Status

Confirmed

Market Status

Available

Compatible Devices

Mobile Phone, PC, Tablet

Media player, Mobile Phone, Tablet

Box Contents

CMF Neckband Pro x 1, Ear tips in size S, M, L, Safety information and warranty information , User guide

Earphone 1N, Charging Cable 1N

Earbuds, USB Cable, User Manual, Warranty Card

Warranty

1 Year

Design

Type

Wireless

Design

In Ear Canalphone

Fit

Behind the neck

In the Ear

Open or Closed Back

Closed Back

Water Resistant

Yes, IP55 rating

Performance

Max Frequency Response

20000 Hz

Min Frequency Response

20 Hz

Driver Type

Dynamic Driver, 13.6 mm

Physical Design

Foldable Design

Yes

Eartip Size

Large, Medium, Small

Weight

29 gm

150 gm

42 gm

Dimensions

Overall :937 x 13.2 x 22.8 mm

Overall :30 x 155 x 183 mm

Overall :73.15 x 36.8 x 29.1 mm

Colours

Dark Grey, Light Grey, Orange

Black

Obsidian Black, Pearl White

Features

Noise Cancellation

Active Noise Cancellation

Yes

Replaceable Earbuds

Yes

Call Control

Answer / End

Answer/End

Music Control

Volume Control

Voice Assistant

Yes

Connectivity

Bluetooth

Bluetooth Version

5.3

5.2

Bluetooth Profile

A2DP, AVRCP, HFP

Bluetooth Range

10 meter

Bluetooth Features

Auto Pairing

Microphone

Yes

Battery

Battery Capacity

220 mAh

280 mAh

520 mAh

Playback Time

37 hours (ANC Off), 23 hours (ANC On)

40 Hours

5 Hours

Charging Type

USB Type-C

Charging Time

10 mins of charge provides 18 hours of playback

2 Hours

1.5 Hours

Battery Type

Li-ion

Li-Polymer

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