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What we think
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Updated April 11, 2024·
For immersive music listening, Sennheiser Momentum Sport offers excellent build quality and better suitability for varied audio content including gaming. If you prioritize a longer battery life and smart features like the LED touch display on the case, consider the JBL Live Flex 3; though its performance for calls and gaming may not match the Sennheiser. For workouts, both are sweatproof but the Sennheiser has added health tracking features. The JBL has better noise isolation which is beneficial during travel and in noisy environments, while the Sennheiser provides aptX Adaptive for potentially better sound quality with compatible devices. Give Feedback
this description is based on the product variant with some specs and product variant with some specs. At the time of writing, the variant with some specs cost some dollars and the variant with some specs cost some dollars.
Advantages of the JBL Live Flex 3
- Very good for music
Advantages of the Sennheiser Momentum Sport
- Good for phone calls
- Very good for gaming
- Good for TV and video
- Very good for air travel
- Good for podcasts and audiobooks
Key differences
Music
8.0
7.5
The JBL Live Flex 3 is very good for music, while the Sennheiser Momentum Sport is good.
Gaming
5.5
8.8
The Sennheiser Momentum Sport is very good for gaming, while the JBL Live Flex 3 is poor.
Phone Calls
5.2
7.0
The Sennheiser Momentum Sport is good for phone calls, while the JBL Live Flex 3 is poor.
Podcasts and Audiobooks
5.9
7.8
The Sennheiser Momentum Sport is good for podcasts and audiobooks, while the JBL Live Flex 3 is poor.
TV and Video
5.7
7.8
The Sennheiser Momentum Sport is good for TV and video, while the JBL Live Flex 3 is poor.
Battery
10.0 Hours
6.0 Hours
The JBL Live Flex 3 has 10 hours of battery life. The Sennheiser Momentum Sport has 6 hours of battery life.
Cost
$216
$330
$100
$150
$200
$250
$300
$350
$400
The JBL Live Flex 3 has a price of $216 and the Sennheiser Momentum Sport costs $330.
Build Quality
8.5
9.0
The Sennheiser Momentum Sport has excellent build quality, while the JBL Live Flex 3 has very good build quality.
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Key similarities
Noise Reduction
8.3
8.0
The JBL Live Flex 3 and Sennheiser Momentum Sport are both very good for noise reduction.
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How the JBL Live Flex 3 and the Sennheiser Momentum Sport compare to other earbuds and headphones
Spec Comparison
 |  | |
| JBL Live Flex 3 | Sennheiser Momentum Sport |
GENERAL | |||
|---|---|---|---|
| Price | |||
$216 | $330 | ||
Brand | |||
Brand | JBL | Sennheiser | |
Release Date | |||
Release Date | June 1, 2024 | March 1, 2024 | |
Form Factor | |||
Form Factor | Earbuds | Earbuds | |
Connectivity | |||
Connectivity | Wireless | Wireless | |
SOUND | |||
|---|---|---|---|
Music Score | |||
Music Score | 8.1/10 | 7.5/10 | |
Phone Calls Score | |||
Phone Calls Score | 5.3/10 | 7/10 | |
Gaming Score | |||
Gaming Score | 5.5/10 | 8.9/10 | |
TV and Video Score | |||
TV and Video Score | 5.8/10 | 7.8/10 | |
Exercise Score | |||
Exercise Score | 8.4/10 | 8.5/10 | |
PERFORMANCE | |||
|---|---|---|---|
Battery life | |||
Battery life | 10 Hours | 6 Hours | |
Wireless charging | |||
Wireless charging | Yes | Yes | |
Charging time | |||
Charging time | 2 Hours | 1.5 Hours | |
Bluetooth version | |||
Bluetooth version | 5.3 | 5.4 | |
Case Battery Life | |||
Case Battery Life | 40 | 24 | |
FEATURES | |||
|---|---|---|---|
Active Noise Cancelling | |||
Active Noise Cancelling | Yes | Yes | |
Noise Reduction Score | |||
Noise Reduction Score | 8.4/10 | 8/10 | |
Virtual Surround | |||
Virtual Surround | Yes | No | |
Android App | |||
Android App | Yes | Yes | |
iOS App | |||
iOS App | Yes | Yes | |
Mic Quality | |||
Mic Quality | 7/10 | 8.5/10 | |
BUILD AND DESIGN | |||
|---|---|---|---|
Build Quality | |||
Build Quality | 8.5/10 | 9/10 | |
Comfort score | |||
Comfort score | 7/10 | 7.6/10 | |
Size | |||
Size | Large | Large | |
Weight (headset or single earbud) | |||
Weight (headset or single earbud) | 8.8 Grams | 6.8 Grams | |
Microphone style | |||
Microphone style | Integrated | Integrated | |
Shopping
Sennheiser Momentum Sport
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Dig into reviews and images
Tech Radar
Amelia Schwanke | January 2024
"We hadn't been expecting a new pair of dedicated sports buds but the surprise was nonetheless exciting. I got to try out the new buds at CES 2024 and while they have stayed true to delivering that "signature" Sennheiser sound, with a wide soundstage and strong sense of detail, it’s the extra wearable tech inside them that stands out to me against the best workout headphones."
Get a great deal on the JBL Live Flex 3 or the Sennheiser Momentum Sport
About JBL
JBL is an American audio equipment manufacturer. Owned by Harman International which is, itself, owned by Samsung Electronics. JBL markets a wide array of monitoring speakers, professional headphones and consumer market headphones and earbuds. It was founded in 1946 by James Bullough Lansing (whose initials give the company its name) and has become one of the most prolific audio companies ever. Their products were responsible for audio during the 1969 Woodstock Festival.
About Sennheiser
A family-owned company, Sennheiser is a German, high fidelity, audio equipment manufacturer founded in 1945. Their consumer audio division is now owned by the Swiss hearing aid and cochlear implant manufacturer Sonova. Sennheiser offers a wide variety of, very high quality, audio equipment solutions, from headphones to earbuds, full sets of monitoring speakers, amplifiers and microphones. They also make what is widely regarded as the best, and most expensive, headphones in existence, the HE-1 Orpheus, costing a whopping $59,000 dollars.
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This information was produced and vetted by the PerfectRec earbuds & headphones team. We are a product research and recommendation organization that meticulously reviews and evaluates the latest earbuds or headphones information and makes it digestible for you.
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