Jaybird X4 Wireless Headphones Review

The Jaybird X4s are all about wireless earphones of the most versatile kind. You don’t need to replace them like a true wireless pair after 3 hours. And you can put them in a pocket so there’s no chunky neckband there. Jaybird used the same theme in the entire X family which began back in 2013. However this time, there are several big improvements. All earlier Jaybird X earphones have an in-ear signature hook to hold them securely in place for suring exercise, with an internal honeycomb arrangement to allow them both solid and versatile. However, the Jaybird X4 earphones also settle for the more traditional.

Get Free Email Updates!

Signup now and receive an email once I publish new content.

I agree to have my personal information transfered to MailChimp ( more information )

I will never give away, trade or sell your email address. You can unsubscribe at any time.

View on Amazon   →

The design is excellent as for past Jaybird X versions. The Comply (now conical) Soft Memory foam eartips are the finest non-custom tips you can find. You get 2 styles, smaller one pair and larger one. We offer enough support, because we adapt to the ear canals ‘ size and shape. Soft to the skin (more forgiving than with X3s) are the 3 types of silicone ear fins or earwings. You barely notice them, but you need to choose the right number. If you don’t use the correct tips and fins style, you will be moaning that you won’t get the warmth.

There are several various ways to carry it. There’s a path under the ear and is how we use normal earphones with down cables. In the X4 example, since this provides more protection, the cables should go under the lip, or more still, behind the back. You may note that the wires often brush against the back of your neck and will tug on the earbuds as they’re rubbery. The force can be enough to remove the buds out of your ears, so you have to readjust. Thankfully, you can play with the cord management clip and get the wire length just right to minimize the problem.

Let’s leap the Jaybird X4 earbuds into the main upgrade: waterproofing! Some of my major issues with the earbuds from the previous Jaybird X3 was they weren’t waterproof, they just had a sweatproof covering. The Jaybird X4 takes the sweatproof surface and offers you a waterproof IPX7 rating the ensures you don’t have to fear much whether you get stuck in torrential rain or lose it in a lake. An IPX7 certification ensures you should submerge them in up to one meter of water for up to 30 minutes. They aren’t the first earbuds to have a sweatproof insulation and IPX7 clearance, but it’s a nice addition to the Jaybird line-up even though it’s the brand that’s playing catch-up.

Besides that, there really aren’t too many differences in how these look and feel. The story is similar to the last time with emphasis put on refining the line instead of re-defining it. They’re still made of plastic (which is good because it keeps them light at about 14.7 grams), and the control module is still super slim. It’s almost exactly the same as on the Jaybird X3, which isn’t bad considering how slim that control module was as well. The only other new features I could find had to do more with design than with build quality. The Jaybird logo is now part of the paint job instead of imprinted on a cheap metallic sticker, the wing tips just have one big hole now instead of a ton of smaller ones, and the nozzle on the all-gray model is painted blue, and I’m all for it. No one will know but you whenever you change the ear tips, but that’s why I like it. It’s your little secret.

Bluetooth Connection:

Link intensity was decent for what you would expect for a Jaybird app, meaning it’s better than good enough but not outstanding Literally I didn’t have any issues. I had no skips when I was running or wearing them when I was walking around my room and I had no dropouts until I hit 30 to 40 feet while I was checking height. But also for normal Bluetooth standards: this is very legal. Once, I had virtually no issues, but the geek in me always wishes Bluetooth 5.0 had these. Playback functions were simple as well, so I didn’t have to dig through the manual to find out it.


And the battery life is on. Jaybird reported the previous X3 earbuds lasted 8 hours, and struck the target on the head pretty much. Everything has improved for The Jaybird X4. We reported 8 hours of continuous replay and we’ve had 7.5 hours in our research. And yes, it’s fair to assume that after you don’t have to think too much about these dying on you, if you’re going to be driving to work or hitting the gym. Only put them into the charging cradle much like the previous edition to charge them, then connect them into a USB socket. Annoying still, but compatible at least with Jaybird.

Sound Quality:

View on Amazon   →

While you can adjust the way this sound functions from the device, I kept it on the “square” profile that’s how it’s set out from the package. Even so, it seems like the Jaybird X4 ‘ buds have a strong emphasis on lower notes. The thumping bass kicks in Freelance Whales ‘ song Generator ^ Second Floor were not overpowering at any stage so I would claim the gentle move really made me understand the music a bit more when I was running outside. Lower notes are typically the first to go anytime there’s vibration outside and the additional umpf has improved well, but you may be surprised if you’re used to the excessive bass of anything like the Powerbeats3.

But if you do fall into that category, you can always just pick that sound profile in the app. I wasn’t a huge fan of the mids and it’s probably because these seem to emphasize vocals a little too much over other instruments. This was apparent in the song Street Lights by Kanye West where his already autotuned voice was masking some of the softer elements in the background. Again, not bad if you want to sing along to your music while you’re working out, but not the best for hearing the nuances in your favorite tracks.

It’s what markets Jaybird as the greatest as it truly is. It requires the tips and ear fins to get things right for the first time, but once you get used to things, you won’t adjust it. The earbuds of wearable exercises sit like a brick. You can sprint and hop about quickly and they don’t budge. That’s why these are one of the greatest runners ‘ headphones. Stability is great for all action forms, so you will quickly forget that you are wearing them. Bench pressing may be the only issue. You put your head on the bench while you’re in the spot. The over – the-ear design is not ideal, since the cables are in the way.

Noise isolation:

The Jaybird X4 have impressive noise isolation due to in-ear design and memory foam eartips. Keep in mind, these are not noise cancelling, as that’s another technology.

View on Amazon   →

If you want to get the best passive noise isolation, you should use the foam instead of silicone ear tips. They provide a substantial upgrade to the amount of ambient noise that’s blocked. In case you’re running outside in the city and need environment awareness you should use smaller ear tips to let in more noise. It will improve your safety—hear more sound around you—which should always be your first priority.

Cable noise is not a problem. When working out in the gym or long-distance running the cables often flap around which can create cord noise (microphonics) in many headphones. It’s not a problem in Jaybird X4. You can comfortably run around with flapping cables, and it won’t damage the sound quality. On the other hand, Wind noise is another thing (as we found out during our testing). When using them outside on a windy day, you’ll most likely hear some wind noise. The wind creates an annoying sound that takes away from the music. It’s due to the earbud casing sticking out of the ears quite substantially, as usual for wireless earbuds.

Fortunately, it isn’t a big problem because it’s only bothersome under 40% volume. If you keep it around 50-60%, you won’t notice it much. Just don’t blast your music too loud for too long. You can damage your hearing quickly.


The new Jaybird X4 utilizes Bluetooth 4.1 with common features such as the 33 ft (10 m) wireless range and Multipoint communication (2 concurrently paired devices). We believe they missed the target, however. For better output that is already integrated in several wireless headphones, they can use Bluetooth 5.0

Nonetheless, the frequency of the transmission is not the strongest, but it also does not break off constantly. This is an estimate. You get virtually no interruption or distortion while wearing the music gadget nearby. When you place a thick wall in between, you’ll have a little of a pause, but you can always function normally in general. The headphones unfortunately only endorse SBC and AAC Bluetooth codecs.


The battery life has not changed, and it remains at 8 hours strong per single charge. It’s better than Jaybird Tarah which offers up to six hours only. Even, the quantity and battery power that degrades over time depend on it. You will usually offer up to 8 hours of music on smaller quantities. Many factors impact the battery life, such as the last time it was used, and even the temperature.

View on Amazon   →

The charging takes about 2 hours which is average for workout earbuds. It’s also capable of quick charging which gives you 1 hour of music for 10 a minute charge. It’s a new feature which is pretty neat.

Many modern lightweight sport headphones move to a USB-C charging port (such as the latest smartphones) to make charging simpler for consumers. Not Jaybird (It will be great just with a micro-USB cable). When you can power a ton of devices with 1 charging cord, it is still safer. There is easier to cart about. Sadly, you’ll still have to cart around their special charging cord if you want the X4 wireless headphones. It has become a hated element of their older iteration, so for the moment it’s staying here.


Building consistency is Jaybird’s biggest vulnerability. The X4 is manufactured in Malaysia, which is presumably meaningless because they have streamlined their manufacturing and quality assurance. Only time will say, but they did a decent job from the looks of things. The earbuds are entirely plastic because it saves on weight and production costs. It is durable plastic which is strong as used in many higher-end headphones.  The cables are smooth as covered by a rubber coating. They look very robust and can hold up to any tugging and dragging. Just don’t try pulling them out at home, these are earbuds after all.

You can hear them in the rain quickly, even a downpour shouldn’t deter them. Sweat isn’t getting near. If we believe the earbuds are really marked as IPX7, this is accurate. Yet we have some questions and the explanation for that is here. The charging device is not waterproof, it states in the user manual. This implies that it is not graded as IPX, which may be impaired by water. Until charging you will also clean them dry.

Jaybird is not renowned for its finest longevity, to be honest. Hopefully, it is special this time around. From the looks of it, Jaybird X4 is the best attempt from the company to create a durable pair of earbuds that survive the sports environment and last longer.

View on Amazon   →

Leave a comment

Your email address will not be published. Required fields are marked *