Comparison

Quick Points


Fit In Ear

Enclosure Closed Back

Connectivity Wireless

Best For iOS & Android

Noise Canceling No

Microphone Yes

Fit In Ear

Enclosure Closed Back

Connectivity Wireless

Best For iOS & Android

Noise Canceling No

Microphone Yes

Colors


What Comes Inside The Box


Sennheiser CX 350BT Earphones

Charging Cable

4 X Silicone Ear Adapters

Sennheiser CX 350BT User Manual

Warranty Card

Sennheiser CX 150BT Earphones

Charging Cable

4 X Silicone Ear Adapters

CX 150BT User Manual

Warranty Card

Our Score


7

8

Reasons Why You Should Buy Them


The Sennheiser CX 350BT has a unique and lightweight design that makes them portable and less visible during everyday activities than a round-the-neck model

The Sennheiser CX 350 BT Wireless provides a very good sound quality compared to other in-ear models. The bass is deep and punchy, but there is no feeling of excess, complimented by detailed midrange and crisp, clear treble

Built-in controls and microphone allow you to answer phone calls, control music playback, adjust volume levels, skiptracks, turn on pairing mode, power on/off, check battery status and connect with Google Assistant, Siri or Baidu

The Sennheiser Smart Control app lets you control your headphones even more, such as ability to change equalizer settings, selectvoice assistant, choose podcast mode for optimized speech, firmware updates and check battery status

Sennheiser has included four different sizes of silicone tips in the packaging to help you find the most comfortable fit

Battery life of up to 10 hours is considerably solid compared to competing models that offer an average of 6-8 hours on a single charge

Thanks to the USB Type-C charging connector, which has become the standard for most Android models these days, you only need to carry one charging cable while traveling

Compatible with high-quality codecs such as aptX, aptX LL, AAC and SBC, you can listen to your favorite songs with high-resolution audio quality

There is no problem with the quality of the calls. The people on the other side of the call hear your voice clearly even in a moderately noisy environment

With Bluetooth 5.0, you can seamlessly connect and switch between multiple devices. You can answer calls on your smartphone while listening to music on a laptop

There are two standard color options to choose from: Black and White depending on your preferences

Compared to other in-ear models, the Sennheiser CX150BT wireless offers good sound quality with decent bass, balanced mids and clear highs, which is good enough for casual and relaxed listening

The Sennheiser CX 150BT has a unique and lightweight design that is portable and invisible in daily activities compared to the round-the-neck models

With built-in controls and microphone, you can answer phone calls, control music playback, adjust volume levels, skip tracks, enter pairing mode, turn power on and off, and check battery status

Sennheiser has included 4 sizes of silicone tips in the package to help you find the most comfortable fit

Thanks to the built-in quality microphones, the person on the other side of the call clearly hears your voice even in a moderately noisy environment

Bluetooth 5.0 offers multi-device pairing that allows you to answer calls on your smartphone while listening to music on a laptop

Up to 10 hours of battery life is fairly robust compared to competing models that offer an average of 6-8 hours on a single charge

You'll love the USB Type-C charging connector, it's become the standard for most Android smartphones, you only need to carry one charging cable when you travel

Like the CX 350BT, The Sennheiser CX 150BT wireless in ear headphones also come in two standard colors: Black and White

Reasons Why You Should Avoid Them


If you like heavy bass genres like Rap, Mettle, Jazz, then these in-ear headphones are not for you, better opt for Sony or Beats headphones

The bass and treble are good as long as you have a good fit, otherwise they sound thinner than they should

The two earbuds are fastened with a cable that appears a little short for some people with a larger neck

For some users, Sennheiser cx 350bt wireless earphone may not stay in the ears due to the lack of optional fins or hooks to keep them stable in the ears

It's just the color that looks good, the quality of the earbuds, the cable and the remote control feels a little cheap

The Sennheiser cx 350bt in ear headphones are not suitable for running or heavy exercise, as they keep jumping down your ears and there's nothing to hold them

A carrying case or pouch is not included in the packaging, which is somewhat disappointing

There is no “auto pause” feature when take them off from your ears, which makes them a little less convenient

Since there is no automatic shutdown mode, the battery will be completely discharged if the earphones are left connected

There is no official IPX rating that indicates how much water and dust resistant these earphones are

There are no magnets inside the earbuds like Beats X to clamp them around your neck when not in use

Sennheiser CX 150BT Bluetooth headphones are not tuned for heavy bass genres like Rap, Mettle and Jazz, better opt for Sony or Beats headphones

The cable that connects the two earbuds looks a bit short and may be uncomfortable for some users, especially those with a larger neck

Some users may not get the secure fit because there are no optional fins or hooks to keep them stable in the ears

The quality of the earbuds, cable and remote control feels a bit cheap, but the color looks really good

The bass and treble depend largely on a tight seal, otherwise they sound thinner than they should

There is no official IPX rating for the waterproof and dust-proof performance of these earbuds

Lack of support for higher quality codecs such as aptX, aptX HD and aptX LL for superior sound quality

They are not suitable for runners or gym lovers, as they keep jumping down the ears and there is nothing holding them back

There is no magnet in earbuds to fasten them around your neck when not in use

The inline battery module is too heavy and occasionally pulls the headphones out of your ears when you have it around the front of your neck and on your back, it just feels weird

The volume could be a little louder. Even if the volume rises to the highest level, you still want more

Highlights


Advanced wireless Bluetooth 5.0 technology with seamless connectivity

Effortless multi-connection pairing for two devices simultaneously

Four-button remote to control music playback, answer calls and connect to voice assistants

Dedicated voice assistant button to connect to Google Assistant, Siri, or Baidu

AAC, SBC, AptX, and AptX LL codec support for superior sound quality

Up to 10 hours of long battery life and fast USB Type-C charging connector

Sennheiser Smart Control App for customizing sound output and firmware updates

Included four different sizes of silicone tips for a comfortable fit

Available color options: Black and White

State-of-the-art wireless Bluetooth 5.0 technology with seamless connectivity

Multi-connection pairing with two devices to listen to music and receive phone calls

3 button built-in remote control for call and music management

Premium sound quality with AAC and SBC codec support

Up to 10 hours of battery life and fast USB Type-C charging port

4 earbud sizes best suited for improving sound quality and blocking ambient noise

Complete peace of mind with a two-year limited warranty

General

Dimensions


Headphone Fit In Ear

Enclosure Closed Back

Size In/Cm Flexible

Weight Gm/Oz 13 g (0.46 oz)

Foldable Design Yes

Headphone Fit In Ear

Enclosure Closed Back

Weight Gm/Oz 13 g (0.46 oz)

Foldable Design Yes

Connectivity


Connectivity Bluetooth

Connect Multiple Devices Yes

On Device Controls No

In Line Mic & Controls Power, Pair, Call, Hold, Volume, Mute, Play/Pause, Skip Tracks, Voice Assistant

Voice Assistant Google Assistant + Siri + Baidu

Companion App Sennheiser Smart Control App

Connectivity Bluetooth

Connect Multiple Devices Yes

On Device Controls No

In Line Mic & Controls Power, Pair, Call, Hold, Volume, Mute, Play/Pause, Skip Tracks

Voice Assistant No

Companion App Sennheiser Smart Control App

Audio


Noise Cancelation Type No

Sound Isolation Yes

Echo Reduction No

Sound Mode Stereo

Volume limiting No

Noise Cancelation Type No

Sound Isolation Yes

Echo Reduction No

Sound Mode Stereo

Volume limiting No

Features


Water/Sweat Resistant No

Waterproof No

Heart Rate Monitor No

Step Tracking No

Water/Sweat Resistant No

Waterproof No

Heart Rate Monitor No

Step Tracking No

Battery


Battery Life Up To 10 Hours

Auto Pause & Play No

Auto Shut-Off No

Quick Charge No

Battery Life Up To 10 Hours

Auto Pause & Play No

Auto Shut-Off No

Quick Charge No

Technical

Technical Data


Driver Size 9.7 mm

Driver Unit Dynamic

Impedance (OHM) 28 Ohm

Frequency Response 17 Hz - 20000 Hz

Sensitivity (dB/mW) 110 dB/mW

Total Harmonic Distortion @ 90 dB Less than 0.5%

Total Harmonic Distortion @ 100 dB Less than 0.5%

Supported Codecs aptX, aptX LL, AAC, SBC

Driver Size 9.7 mm

Driver Unit Dynamic

Impedance (OHM) 28 Ohm

Frequency Response 17 Hz - 20000 Hz

Sensitivity (dB/mW) 110 dB/mW

Total Harmonic Distortion @ 90 dB Less than 0.5%

Total Harmonic Distortion @ 100 dB Less than 0.5%

Supported Codecs AAC, SBC

Wireless


Bluetooth Version 5.0

Bluetooth Profiles A2DP, AVRCP, HFP, HSP

Radio Frequency 2.4 GHz

Wireless Range Up To 10 m (33 ft)

NFC No

Bluetooth Version 5.0

Bluetooth Profiles A2DP, AVRCP, HFP, HSP

Radio Frequency 2.4 GHz

Wireless Range Up To 10 m (33 ft)

NFC No

Noise Canceling


Noise Canceling Adjustment No

Noise Canceling ON/Off Switch No

Atmospheric Pressure Optimizing No

Ambient Sound Mode No

Noise Canceling Adjustment No

Noise Canceling ON/Off Switch No

Atmospheric Pressure Optimizing No

Ambient Sound Mode No

Audio Cable


Detachable Audio Cable No

Detachable Audio Cable No

Microphone


Microphone Feature On-board MEMS, Omni Directional Microphone

Microphone Sensitivity 42 dB/mW

Microphone Frequency Response 100 Hz - 8000 Hz

Microphone Feature On-board MEMS, Omni Directional Microphone

Microphone Sensitivity 42 dB/mW

Microphone Frequency Response 100 Hz - 8000 Hz

Power


Battery Rechargeable Lithium-Polymer

Charge Time 2.5 Hours

Charging Cable Type-C Cable

Battery Indicator Yes

Operating & Storage Temperature 41°F - 104°F

Battery Rechargeable Lithium-Polymer

Charge Time 1.5 Hours

Charging Cable Type-C Cable

Battery Indicator Yes

Operating & Storage Temperature 41°F - 104°F

Compatibility

iOS


Connection Wireless

Audio Yes

Microphone Yes

Controls Yes

Connection Wireless

Audio Yes

Microphone Yes

Controls Yes

Android


Connection Wireless`

Audio Yes

Microphone Yes

Controls Yes

Connection Wireless

Audio Yes

Microphone Yes

Controls Yes

Windows


Connection Wireless

Audio Yes

Microphone Yes

Controls Limited

Connection Wireless

Audio Yes

Microphone Yes

Controls Limited

Xbox


Connection No

Audio No

Microphone No

Controls No

Connection No

Audio No

Microphone No

Controls No

Playstation


Connection No

Audio No

Microphone No

Controls No

Connection No

Audio No

Microphone No

Controls No

TV & Home Theater


Connection No

Audio No

Microphone No

Controls No

Connection No

Audio No

Microphone No

Controls No

Service & Support

How to Operate/Quick Guide https://assets.sennheiser.com/global-downloads/file/12932/CX_350BT_QG_587103_0520_A02_INT.pdf

Owner's Manual https://cdn.sennheiser-cloud.com/help/products/cx350/en/manual/index.html#t=CX350BT_EN%2FCX350BT_Manual_EN_587105_0120%2Ftopic_CX350BT_Manual_EN_587105_0120.htm

How to Operate/Quick Guide https://assets.sennheiser.com/global-downloads/file/12864/CX_150BT_QG_587108_0520_A02_INT.pdf

Owner's Manual https://cdn.sennheiser-cloud.com/help/products/cx150/en/manual/index.html#t=CX150BT_Manual_EN%2FCX150BT_Manual_EN%2Ftopic_CX150BT_Manual_EN-.htm

Manufacturer's Warranty on Parts 2 Years Limited Warranty

Manufacturer's Warranty on Labour 2 Years Limited Warranty

Helpline 1 (877) 736-6434

Contact Click Here

Manufacturer's Warranty on Parts 2 Years Limited Warranty

Manufacturer's Warranty on Labour 2 Years Limited Warranty

Helpline 1 (877) 736-6434

Contact Click Here

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