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What we think
The PerfectRec Earbuds or Headphones team Learn more
Updated April 11, 2024·
If you prioritize portability and low latency for activities like gaming, the JBL Tune Flex earbuds could be your pick; they come with a low latency mode and are sweatproof, suited for exercise. However, their sound isolation and microphone quality are fair, not the best for noisy environments or calls. For immersive TV and video experiences, the Sennheiser 450BT headphones offer excellent sound quality and active noise cancelling, enhancing focus during air travel or in busy areas. Despite being more expensive and slightly heavier, they cater to comfort with an over-ear design and longer battery life for extended use. Both support Bluetooth connectivity, but if a built-in mic and better call quality are essentials, then the Sennheiser stands out. Consider the JBL for on-the-go activities and casual gaming, and the Sennheiser for a cozy listening experience with effective noise control. 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 Tune Flex
- Good for music
- Good for exercise
- Excellent for podcasts and audiobooks
Advantages of the Sennheiser 450BT
- Very good for TV and video
- Excellent for air travel
Key differences
Music
7.3
6.2
The JBL Tune Flex is good for music, while the Sennheiser 450BT is only fair.
Phone Calls
6.3
6.9
The Sennheiser 450BT and JBL Tune Flex are both only fair for phone calls, though the Sennheiser 450BT is somewhat better.
Podcasts and Audiobooks
9.0
7.9
The JBL Tune Flex is excellent for podcasts and audiobooks, while the Sennheiser 450BT is good.
Noise Reduction
6.5
9.1
The Sennheiser 450BT is excellent for noise reduction, while the JBL Tune Flex is only fair.
Battery
6.5 Hours
27.5 Hours
The JBL Tune Flex has 6.5 hours of battery life. The Sennheiser 450BT has 27.5 hours of battery life.
Cost
$60
$90
$40
$60
$80
$100
$120
$140
$160
The JBL Tune Flex has a price of $60 and the Sennheiser 450BT costs $90.
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Key similarities
Gaming
8.5
8.8
The Sennheiser 450BT and JBL Tune Flex are both very good for gaming.
TV and Video
7.8
8.1
Although they have very similar scores, PerfectRec considers Sennheiser 450BT to be very good for TV and video, while the JBL Tune Flex is good.
Build Quality
8.5
8.0
The JBL Tune Flex and Sennheiser 450BT both have very good build quality.
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How the JBL Tune Flex and the Sennheiser 450BT compare to other earbuds and headphones
Spec Comparison
 |  | |
| JBL Tune Flex | Sennheiser 450BT |
GENERAL | |||
|---|---|---|---|
| Price | |||
$60 | $90 | ||
Brand | |||
Brand | JBL | Sennheiser | |
Release Date | |||
Release Date | September 1, 2022 | February 1, 2020 | |
Form Factor | |||
Form Factor | Earbuds | Headphones | |
Connectivity | |||
Connectivity | Wireless | Wired + Wireless | |
SOUND | |||
|---|---|---|---|
Music Score | |||
Music Score | 7.3/10 | 6.2/10 | |
Phone Calls Score | |||
Phone Calls Score | 6.3/10 | 7/10 | |
Gaming Score | |||
Gaming Score | 8.6/10 | 8.9/10 | |
TV and Video Score | |||
TV and Video Score | 7.8/10 | 8.1/10 | |
Exercise Score | |||
Exercise Score | 7.7/10 | 6.1/10 | |
PERFORMANCE | |||
|---|---|---|---|
Battery life | |||
Battery life | 6.5 Hours | 27.5 Hours | |
Wireless charging | |||
Wireless charging | No | No | |
Charging time | |||
Charging time | 2 Hours | 2.3 Hours | |
Bluetooth version | |||
Bluetooth version | 5.2 | 5 | |
Case Battery Life | |||
Case Battery Life | 18 | N/A | |
FEATURES | |||
|---|---|---|---|
Active Noise Cancelling | |||
Active Noise Cancelling | Yes | Yes | |
Noise Reduction Score | |||
Noise Reduction Score | 6.5/10 | 9.1/10 | |
Virtual Surround | |||
Virtual Surround | No | No | |
Android App | |||
Android App | Yes | Yes | |
iOS App | |||
iOS App | Yes | Yes | |
Mic Quality | |||
Mic Quality | 5.1/10 | 8.5/10 | |
BUILD AND DESIGN | |||
|---|---|---|---|
Build Quality | |||
Build Quality | 8.5/10 | 8/10 | |
Comfort score | |||
Comfort score | 7.6/10 | 7/10 | |
Size | |||
Size | Large | N/A | |
Weight (headset or single earbud) | |||
Weight (headset or single earbud) | 9 Grams | 240.4 Grams | |
Microphone style | |||
Microphone style | Integrated | Integrated | |
Shopping
JBL Tune Flex
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Dig into reviews and images
MajorHiFi
Gabby Bloch | May 2023
"JBL is offering a similar design and arguably better resolution than the more expensive AirPods 3rd Generation. Add to that a comfortable and versatile fit, an equalizer and pretty decent ANC, and you’ve got a quality wireless earphone. I would have loved longer battery life and more crystal calls, but for the price, you can’t complain. A solid deal overall."
Sennheiser 450BT
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Dig into reviews and images
Sound Guys
Lily Katz | March 2022
"The Sennheiser HD 450BT is a very good pair of headphones for the price, noise canceling is good and sound quality is great—quite rare at this price point. Like any product, this headset isn’t without its faults."
Get a great deal on the JBL Tune Flex or the Sennheiser 450BT
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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About the Earbuds or Headphones team
Joe Golden, Ph.D
CEO and Earbuds and Headphones Editor
Joe is an entrepreneur and lifelong electronics enthusiast with a Ph.D in Economics from the University of Michigan.
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