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Sennheiser CX True Wireless In-Ear Headphones - Black

Bluetooth 5.2 - German-Made 7mm Dynamic Drivers - IPX4 / AptX - Up to 8 Hours Battery Life / 27 Hours Total with Charging Case

PB Tech price
PB Tech price
$ 79 .95
 +GST
$ 87 .94
 inc GST
$79.95  +GST
$87.94

Sennheiser CX True Wireless In-Ear Headphones - Black

Bluetooth 5.2 - German-Made 7mm Dynamic Drivers - IPX4 / AptX - Up to 8 Hours Battery Life / 27 Hours Total with Charging Case

Superior sound. Nothing less.
  • Brand: Sennheiser
  • MPN: 508973
  • Part #: HSTSEN508973
  • UPC: 615104355040
13
PB Tech price
$ 79 .95 $ 87 .94
 +GST  inc GST


Delivery: Order now and it ships on 22 Jun
Express Delivery Times
Metro - Within 2-3 working days
Rural - Within 3-5 working days

Standard Delivery Times
NSW, VIC, ACT, QLD - Within 3-7 working days
SA, WA, TAS, NT - Within 5-10 working days

View all shipping info
$79.95  +GST
$87.94
  • Brand: Sennheiser
  • MPN: 508973
  • Part #: HSTSEN508973
  • UPC: 615104355040

Colour

Black

Microphone

Yes

Rated Battery Life

Up to 27 Hours

Noise Cancelling

No

Wireless Technology

Bluetooth

Interface

Bluetooth

IP Rating

IPX4

Multipoint

Not Specified

What PB Tech customers are saying about this product...

See More Reviews

"Good sound, comfortable fit and hold a decent charge. I like them. Only drawback is if i am exercising hard, (jumping, twisting) they can feel a little loose. But they have stayed ...view more"

MJ
By: MattJ986 13/11/25
Verified Owner

"The quality is well worth the affordable price. The mechanism on the hinge seems to wear easily as I have only had them for about a month or so. Would definitely recommend for some ...view more"

JB
By: JosephB756 01/12/23
Verified Owner

"This model has all the features that were missing in the previous. Making it pretty much faultless for me. Fantastic sound quality, fast connecting and very comfy (after a few days ...view more"

CH
By: CalebH83 28/10/21
Verified Owner

COMBO DEALS: Frequently Bought Together

Create your own combo deal with any of the items below and the Sennheiser CX True Wireless In-Ear Headphones -...
Sennheiser CX True Wireless In-Ear Headphones - Black Bluetooth 5.2 - German-Made 7mm Dynamic Drivers - IPX4 / AptX - Up to 8 Hours Battery Life / 27 Hours Total with Charging Case
Total:
$ 123 .58
 +GST
$ 135 .94

Features



CX True Wireless

Superior sound. No compromise.

Compromise on your audio experience? No way! Put sound first, like Sennheiser does. We have put our 75 years of leading audio technology into the new CX True Wireless earbuds. They deliver crystal-clear sound with deep bass you can easily adjust to your personal taste. With an ergonomic design for superb wearing comfort and intuitive controls for maximum ease of use, you'll have a first-rate listening experience at home, at work or on the move.

 

Don't compromise on sound

Superior audio - Wherever you are, whatever you do; enjoy your favorite tracks to the max with the bespoke TrueResponse Transducer for crystal-clear sound.

Intense groove - With the Bass Boost added and the Built-In Equalizer activated via the Smart Control App, you can have your sound your way.

Skip the noise - You can forget about your surroundings and get lost in the music or focus on your call thanks to the Passive Noise Cancellation.

 

Don't compromise on comfort

Easy to wear - The eye-catching ergonomic design assures superb wearing comfort. And with ear adapters in 4 sizes, it's easy to achieve a perfectly secure fit for any activity.

At your fingertips - Customizable touch control enables easy control of audio, phone calls and fast access to Siri and Google Assistant.

Even in the rain - Go outside at any time to have an outstanding audio experience, even when it's wet; you can rely on their IPX4 splash resistance.

 

Individualize your Sennheiser product

With the intuitive equalizer you can adjust the sound to your personal taste.

 

Create your sound experience

Pair your Sennheiser device with our Smart Control App.

Customize what you hear and how you interact with your Sennheiser device.

 

AVAILABILITY

Sennheiser Smart Control is a free app and compatible with most iOS and Android systems.

This App is available in 8 languages including German, English, French, Spanish, Russian, Korean, Japanese and Mandarin.

 

 

Specifications

Dimensions

Earbuds and charging case: 59 x 33.8 x 42.3 mm (2.3 x 1.3 x 1.6 in)

Colour

Black

Weight

49g (both earbuds and charging case) 6g (single earbud) 37g (charging case)

Power supply

5 V = 600 mA max

Speaker type

TrueResponse Transducer Sennheiser 7mm dynamic driver

USB Standard

USB-C

Frequency response (Microphone)

100 Hz to 10 kHz

Frequency response (Headphones)

5 hz - 21,000 Hz

Microphone

2 mic beamforming arrays (4 mics in total)

Supported Profiles

A2DP, AVRCP, HFP

Ear coupling

In-ear, closed acoustics

Charging time

1.5 h for full charge / 15 min for 1 h playtime

Battery Specification

Built-in Lithium-Ion rechargeable batteries L/R earbud: ~60 mAh; charging case: ~400 mAh

Battery Life

27 hrs

Bluetooth

Bluetooth 5.2 compatible, class 1, BLE

Codecs

SBC, AAC, aptX™

Equalizer

EQ pre-set via Smart Control App

Bass Boost

Via Smart Control App

Battery time

Up to 9 hrs music playtime with earbuds Up to 27 hrs music playtime with charging case

Noise cancellation

Passive Noise Cancellation

App support

Sennheiser Smart Control App for iOS™ and Android™

IP Rating

IPX4

Package dimensions

(L x W x H) 170 x 130 x 47 mm (6.7 x 5.1 x 1.85 in)

Warranty

2 years

What's in the box?

CX True Wireless Earbuds
Silicone ear adapter sets (XS, S, M, L)
Charging Case
USB-C Cable
Quick Guide & Safety Guide

Manufacturer Part No:
508973
Brand:
Product Type:
In-Ear Headphones
UPC
615104355040
Product Family:
CX
Shipping Weight:
0.2 kg
PB Part No:
HSTSEN508973
Product Model:
True Wireless
Warranty: 12 months *
* Warranty period is as stated above unless the manufacturer has chosen to specify a longer period.
All warranties are return to base unless otherwise specified.
Provide feedback on product content: If this product page is missing key information or you spotted a mistake please let us know.

Reviews

3.7 out of 5 Stars Based on 13 reviews
5 Stars
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dissatisfied

bought this and using it with iphone 12 pro max; 2 weeks later right microphone stopped working. 3 rd week one of the earbud started freezing. connection issues. have to switch off and reconnect or do the factory reset for pairing again.

JR
By: JijoR 17/11/21
Verified Owner
2 out of 4 users found this review helpful
Did you find it helpful?

Sennheiser Earbuds

Good sound, comfortable fit and hold a decent charge. I like them. Only drawback is if i am exercising hard, (jumping, twisting) they can feel a little loose. But they have stayed in my ears throughout all the workouts. Good overall!

MJ
By: MattJ986 13/11/25
Verified Owner
0 out of 0 users found this review helpful
Did you find it helpful?

This is the worst quality product I have ever wasted money on.....

This was the first set and died fairly early on, left earbud driver diaphragm separated, I filed a case with Sennheiser, had to fight tooth and nail to have them honor the warranty.
The replacement set (accentum series) was no better and failed in exactly the same way within three months.
Sennheiser refuse to replace them saying I must have left them in a hot car yet they never left the climate controlled house!
I am not a heavy user by any means and looked after these. They should have lasted years like my much cheaper skull candy pair.
The sound quality is the only good thing, but what point is that if they just die?
It's all over reddit, ...view more

JS
By: JulesS79 31/10/25
Verified Owner
0 out of 0 users found this review helpful
Did you find it helpful?

Batteries failed just after warranty expired

As I say: Batteries failed just after warranty expired.
I only really had use for these when I was mowing the lawn. I didn't use them for a few months after we moved house (and no longer had an expansive lawn to mow), but when I did go to use them again, they weren't able to run longer than about 60-90 mins on a full charge. When I checked my receipt - was 2 months outside warranty (1 year, I believe).
These were the first wireless earbuds I've ever bought and the only. Has kind of had a chilling effect on me buying any replacements.
Sound quality seemed okay, but these were the only earbuds I've ever owned, so nothing to really compare with....view more

G
By: Guest 23/10/25
0 out of 0 users found this review helpful
Did you find it helpful?

Fantastic quality

The quality is well worth the affordable price. The mechanism on the hinge seems to wear easily as I have only had them for about a month or so. Would definitely recommend for someone looking in the mid to high range.

JB
By: JosephB756 01/12/23
Verified Owner
0 out of 0 users found this review helpful
Did you find it helpful?

Great product

Sound quality is really good

G
By: Guest 03/09/23
0 out of 0 users found this review helpful
Did you find it helpful?

A great midrange true wireless bluetooth earbuds

for an average user like me. the sound quality of the earbuds feels pretty nice for its price. Noice cancelling is pretty good and the sounds coming from the earbuds won’t be heard from the outside

G
By: Guest 28/03/23
0 out of 0 users found this review helpful
Did you find it helpful?

Pretty good

Good price, and good quality. I am happy with the product.

HY
By: HongsikY 05/12/22
Verified Owner
0 out of 0 users found this review helpful
Did you find it helpful?

Great product

Really nice earbuds, super comfy, great sound quality, really good for the price highly recommended.

G
By: Guest 22/03/22
0 out of 0 users found this review helpful
Did you find it helpful?

Good earbuds for its price

Since I used a promo code for this I think they are a great price, good sound and they look great

ES
By: EdmundpsullivanS 14/03/22
Verified Owner
0 out of 0 users found this review helpful
Did you find it helpful?

Finicky but sound good

I've had the product for a few months now.
Half the time I use these I have to re-pair them to get both ears working. The other half of the time is adjusting them so it actually works in my ears.
However, when they are working they sound fantastic. And they were decently cheaper than other products which somewhat makes up for the issues.

JN
By: JoshuaN769 28/02/22
Verified Owner
0 out of 0 users found this review helpful
Did you find it helpful?

Nice and compact

Suits my needs and is really good

G
By: Guest 23/11/21
0 out of 0 users found this review helpful
Did you find it helpful?

Delivery & Pick-up

Learn more about delivery time-frames over Christmas and the New Year period.

Shipping Costs

Shipping costs vary based on your location and the items being shipped and in some cases shipping may even be FREE.

To calculate what the shipping costs will be for your order, add the items you are interested in to your cart, view the Shopping Cart page, and select your 'Delivery Area' to calculate the shipping cost.

Shipping Security and Insurance

All orders shipped by PB Tech are sent via a courier with a signature required for each delivery. In some cases, and only where you have given the courier company permission to leave orders at a designated location, your order may be delivered without requiring a signature. All orders sent by PB Tech are fully insured in the unlikely event that your item(s) are damaged or go missing in transit.

Delivery Estimates

The delivery time-frame (in days) for each product we sell is detailed on the individual product page just to the right of the main product image. From when you place your order, for DHL express delivery in-stock products typically arrive within 2-3 working days for metro areas and 3-5 working days for rural areas. For Standard delivery in-stock products typically arrive within 3-7 working days for NSW, VIC, ACT, QLD and SA deliveries and 5-10 working days for WA, TAS and NT.

Overseas Shipments

If you are located in New Zealand, you can order directly from our New Zealand site www.pbtech.co.nz. If you are from another country you can order from www.pbtech.com

Returns & Warranty

7 day right of exchange

If you change your mind after making a purchase, or realise you have ordered the incorrect item, you can enjoy the peace of mind that we offer a 7 day exchange policy.

To exchange a product, goods must be sealed / unopened, with packaging in original condition, and accompanied by a valid receipt dated no more than 7 calendar days from when you request an exchange.

If there is not a suitable product that can be exchanged for your returned item you will be offered a credit on your account or gift card based on the value paid at the time of purchase.

Please note, items purchased on finance cannot be exchanged for a gift card.

 

Hassle free warranty service

If your product develops a fault within the manufacturer warranty period, you need to fill out our request a return form.

If your product develops a fault outside of the manufacturer warranty or PB Tech warranty period, we offer a full repair service and are an authorised repair agent for leading brands such as Samsung, HP, Toshiba, Lenovo and more.

 

Returning a product / making a warranty claim

To return a product to PB Tech, please complete our request a return form.

Or view our returns policy for more information.

Sennheiser CX True Wireless In-Ear Headphones - Black Bluetooth 5.2 - German-Made 7mm Dynamic Drivers - IPX4 / AptX - Up to 8 Hours Battery Life / 27 Hours Total with Charging Case

Superior sound. Nothing less.
  • Brand: Sennheiser
  • MPN: 508973
  • Part #: HSTSEN508973
  • UPC:615104355040
$79.95 Excluding GST $87.94 Including GST

Date Created: 21:06, 19-06-2026
Product URL: https://www.pbtech.com/au/product/HSTSEN508973/Sennheiser-CX-True-Wireless-In-Ear-Headphones---Bl

Features



CX True Wireless

Superior sound. No compromise.

Compromise on your audio experience? No way! Put sound first, like Sennheiser does. We have put our 75 years of leading audio technology into the new CX True Wireless earbuds. They deliver crystal-clear sound with deep bass you can easily adjust to your personal taste. With an ergonomic design for superb wearing comfort and intuitive controls for maximum ease of use, you'll have a first-rate listening experience at home, at work or on the move.

 

Don't compromise on sound

Superior audio - Wherever you are, whatever you do; enjoy your favorite tracks to the max with the bespoke TrueResponse Transducer for crystal-clear sound.

Intense groove - With the Bass Boost added and the Built-In Equalizer activated via the Smart Control App, you can have your sound your way.

Skip the noise - You can forget about your surroundings and get lost in the music or focus on your call thanks to the Passive Noise Cancellation.

 

Don't compromise on comfort

Easy to wear - The eye-catching ergonomic design assures superb wearing comfort. And with ear adapters in 4 sizes, it's easy to achieve a perfectly secure fit for any activity.

At your fingertips - Customizable touch control enables easy control of audio, phone calls and fast access to Siri and Google Assistant.

Even in the rain - Go outside at any time to have an outstanding audio experience, even when it's wet; you can rely on their IPX4 splash resistance.

 

Individualize your Sennheiser product

With the intuitive equalizer you can adjust the sound to your personal taste.

 

Create your sound experience

Pair your Sennheiser device with our Smart Control App.

Customize what you hear and how you interact with your Sennheiser device.

 

AVAILABILITY

Sennheiser Smart Control is a free app and compatible with most iOS and Android systems.

This App is available in 8 languages including German, English, French, Spanish, Russian, Korean, Japanese and Mandarin.

 

 

Specifications

Dimensions

Earbuds and charging case: 59 x 33.8 x 42.3 mm (2.3 x 1.3 x 1.6 in)

Colour

Black

Weight

49g (both earbuds and charging case) 6g (single earbud) 37g (charging case)

Power supply

5 V = 600 mA max

Speaker type

TrueResponse Transducer Sennheiser 7mm dynamic driver

USB Standard

USB-C

Frequency response (Microphone)

100 Hz to 10 kHz

Frequency response (Headphones)

5 hz - 21,000 Hz

Microphone

2 mic beamforming arrays (4 mics in total)

Supported Profiles

A2DP, AVRCP, HFP

Ear coupling

In-ear, closed acoustics

Charging time

1.5 h for full charge / 15 min for 1 h playtime

Battery Specification

Built-in Lithium-Ion rechargeable batteries L/R earbud: ~60 mAh; charging case: ~400 mAh

Battery Life

27 hrs

Bluetooth

Bluetooth 5.2 compatible, class 1, BLE

Codecs

SBC, AAC, aptX™

Equalizer

EQ pre-set via Smart Control App

Bass Boost

Via Smart Control App

Battery time

Up to 9 hrs music playtime with earbuds Up to 27 hrs music playtime with charging case

Noise cancellation

Passive Noise Cancellation

App support

Sennheiser Smart Control App for iOS™ and Android™

IP Rating

IPX4

Package dimensions

(L x W x H) 170 x 130 x 47 mm (6.7 x 5.1 x 1.85 in)

Warranty

2 years

What's in the box?

CX True Wireless Earbuds
Silicone ear adapter sets (XS, S, M, L)
Charging Case
USB-C Cable
Quick Guide & Safety Guide

Date Created: 21:06, 19-06-2026
Product URL: https://www.pbtech.com/au/product/HSTSEN508973/Sennheiser-CX-True-Wireless-In-Ear-Headphones---Bl