Will they work wth MP3 players? I don't want to use them with my phone.

They’ll work with anything with Bluetooth.

Do they remain paired with 2 different devices at the same time? Or do you have to unpair and then paor with the other ie to answer a phone call

No don't stay paired 2 to different devices at once

How secure are these in ear when running? I have owned many earbuds & the only ones that have properly stayed in have been Jaybirds. Are these secure?

Personally I don’t rate them very highly at all. They are not that secure and within a week one stopped working . The Bose sport earbuds are better sounding and they are more secure. That’s just my opinion though

Whats the sound quality like?

I've had these true wireless earbuds for about a week so far and the audio quality seems great so far, they have the usual audio quality you would expect from Sennheiser products. So far I have only tried them with the alert buds which are great for running so you can hear cyclist bells and encroaching cars (some damping even in this mode as your own footfall isnt audible). I'll add a full review once I try the focus buds to see how good the sound cancellation is.

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Sennheiser SPORT True Wireless Earbuds - Bluetooth In-Ear Headphones for Active Lifestyles, Music and Calls with Adaptable Acoustics, Noise Cancellation, Touch Controls, IP54 and 27-hour Battery Life

Product ID: 428210876

Details

Brand
Sennheiser
Colour
Black
Ear placement
In Ear
Form factor
In Ear
Frequency response
19500 Hz
Headphone jack
No socket

🎧TrueResponse 7mm dynamic driver

💧IP54 sweat & splash resistant

🔋27-hour battery life

AR$540596

Duties & taxes included

In stock

Sold byAmazon ArgentinaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎧 Elevate your workout soundtrack with sound that moves as fast as you do.

UNSTOPPABLE POWER - Up to 27 hours of non-stop music with fast on-the-go charging—never miss a beat during your grind.
TAILORED SOUNDSCAPE - Adaptable Acoustics with open & closed ear adapters let you control your focus or stay aware of your surroundings.
SWEATPROOF WEATHER READY - IP54 rating means these earbuds thrive through rain, sweat, and beach runs—performance that keeps up with you.
PRECISION FIT ALL DAY COMFORT - Ergonomic design with multiple ear fins and adapters ensures a secure, personalized fit for every workout.
SMART CONTROL AT YOUR FINGERTIPS - Customize sound, calls, and controls via the intuitive app and touch interface for a truly personal audio experience.

Sennheiser SPORT True Wireless Earbuds combine German-engineered superior sound with adaptable acoustics and a secure, ergonomic fit. Featuring a 27-hour battery life, IP54 sweat and splash resistance, and customizable controls via the Smart Control App, these earbuds are designed for active professionals who demand premium audio performance and situational awareness during workouts.

Specifications

ASIN	B09WDK7GGJ
Age Range Description	Adult
Antenna Location	Cycling, Exercising, Running
Audio Driver Type	Dynamic Driver
Battery Average Life	27 hours
Battery Charge Time	90 minutes
Best Sellers Rank	187 in In-Ear Headphones
Bluetooth Range	30 Metres
Bluetooth Version	5.0
Box Contents	Charging case with lanyard, Closed and Open ear adapter sets (S/M/L), Ear fins sets (N, S1, S2 , S3), Quick Guide, SPORT True Wireless earbuds, Safety Guide, USB-C charging cable
Brand Name	Sennheiser
Cable Features	Without Cable
Carrying Case Battery Average Life	27 Hours
Carrying Case Battery Charging Time	1.5 Hours
Carrying Case Color	Black
Carrying Case Material	Plastic
Carrying Case Weight	55 Grams
Colour	Black
Compatible Devices	Smartphone, Tablet
Control Method	Touch
Control Type	App, Touch
Controller Type	app_and_touch
Customer Package Type	FFP
Customer Reviews	3.8 3.8 out of 5 stars (2,561)
EU Spare Part Availability Duration	2 Years
Earpiece Shape	Round tip
Enclosure Material	Plastic
Frequency Range	20 Hz - 20,000 Hz
Frequency Response	19500 Hz
Global Trade Identification Number	00810091270677, 04260752330671
Headphone Form Factor	In Ear
Headphone Jack	No socket
Headphones Ear Placement	In Ear
Impedance	46 Ohms
Is Autographed	No
Is Electric	No
Item Type Name	In Ear True Wireless Earbuds
Item Weight	0.2 Kilograms
Manufacturer	Sennheiser
Model Name	Sport True Wireless
Model Number	509299
Network Connectivity Technology	Wireless
Noise Control	Passive Noise Cancellation
Number of Items	1
Product Features	Microphone Included, Sweatproof
Product Warranty	2 year manufacturer
Sensitivity	110 dB
Series Number	4
Specific Uses For Product	Sport and exercises
Style Name	In-ear
Subject Character	no subject character
Theme	Sports
UPC	810091270677
Unit Count	1.0 count
Water Resistance Level	Water Resistant
Wireless Technology Type	Bluetooth

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

View all Trustpilot reviews

AR$540596

Duties & taxes included

In stock

Sold byAmazon ArgentinaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Argentina.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Khalid Z.

Great experience from order to delivery. Highly recommended!

1 week ago

View all Trustpilot reviews