==== Summary ==== The Jaybird X4 earphones blew me away with its quality build, supreme comfort, and excellent audio quality. It does so many things right - light & durable, super comfortable in the ears, water resistant, excellent control over sound through the custom EQ app, great audio, and long battery life. Athletes will love the Jaybird X4 as well as casual users who value sound quality and water resistance flexibility. Jaybird has lived up to the hype and has created a very good and compelling product. These are fantastic earphones. **Pros: -Light and comfortable design. -Secure fit with soft ear fins/hooks. -Both the silicone & Comply foam ear tips are comfortable. -Comfly foam ear tips provide great natural/passive sound isolation. -Fantastic audio quality (with in-app EQ adjustment). -Good phone call quality. -Excellent battery life. -Earphone control buttons work well. -Excellent Jaybird app (custom EQ, battery status, Find my buds). -IPX7 water resistance. -Quick charge. -Tangle-resistant cord. -Cord cinch is useful. **Cons: -Very short (~3") & propriety charge cradle cable with no wall charger. ==== Design & Comfort ==== The Jaybird X4 earphones are designed very well - for both athletes and casual earphone users. It is light, made with durable materials and quality plastic, very comfortable for extended usage during normal & physical activities, and come with both soft silicone and Comply foam ear tips (in different sizes). Between the two types of ear tips, I prefer the Comply foam tips (size small). They are more comfortable to wear and they also offer better passive sound isolation than the silicone ones. In addition, sound quality gets a boost, especially in bass-heavy songs. The ear fins come in two different sizes as well and they're soft and compliant and fit inside the ears snugly and securely. I'm a jogger and the X4 was an excellent running companion with its secure fitment, outside noise isolation, and comfort. During my usual 5 to 6 miles run, I sweat profusely so it was good to know that the X4 is IP7X water resistant. I also appreciate being able to quickly clean the earphones with water without fear of damaging them. The Jaybird X4 is controlled with a 3-button remote module located near the right earpiece - volume up, volume down, and the middle multi-function button. The middle button is used for Power On, Power Off, Bluetooth pairing, answering/ending phone calls, and launching Google Assistant (with my Samsung Galaxy S9+). Everything worked smoothly and perfectly. The X4's battery is replenished by a charge cradle with a cable. One side of the charge cradle snaps onto the body of the remote module of the X4 and you then plug the other end of the cable into a charger or device that accepts USB Type A. I successfully charged the X4 by plugging it in to my laptop, my desktop PC, and one of my smartphone chargers. It took a little while for me to get used to snapping on the charge cradle to the X4. It was kind of annoying trying to align the pins on the charge cradle to the remote module despite the four small guiding tabs on the charge cradle that help with the alignment. I'm sure muscle memory will kick in soon, though, and the process will become easier and faster through time and repetition. With that said, I prefer this charge cradle method over having to using my fingernail to pull back a rubber or plastic flap before inserting a charging cable. I believe Jaybird is using this method to meet its water resistance and durability requirements. All in all, Jaybird has created some awesome hardware with lots of thoughtful and useful features. 10 out of 10 from me~! ==== Sound Quality ===== Out of the box, I found the sound to be just so-so though it was still better than my other two wired Bluetooth earphones - some $30 earphones from Amazon and a $100 JLab earphones. Once I opened the Jaybird app and played around with the EQ settings, however, the sound quality became FANTASTIC and AWESOME. I started with the "Warmth" preset profile and made sound quality my own by adjusting the Low, Mid, and High ranges within the "Customize" option. After saving & applying my custom preset, my enjoyment of music from the Jaybird X4 went from a 7 to 10 out of 10. I highly recommend everyone to invest some time and play around inside the EQ settings to tailor the music to one's personal tastes. It really does make a HUGE difference. I am not what you call an audiophile but the X4 - after EQ tuning - has really impressed me with its sound quality. The sound is crisp and clear, the bass is pretty decent (for Bluetooth earphones), sound separation and dynamic range are well-presented, and it delivers very well-balanced audio. I love it. Is it as good or better than over-the-ear headphones such as the Sony 1000XM3 or Bose QC35 Series II? Of course not. But for wired Bluetooth earphones that offer easy portability, lightness, and durability during physical activities, I don't think one can do better than the Jaybird X4. 10 out of 10~! ==== Battery life ==== The X4 offers very good battery life. 8 to 9 hours of playtime is higher than most other similar competing products and you won't have to charge it midday like you do with those small wire-free Bluetooth earphones. 10 out of 10. ==== Conclusion ==== Jaybird has created an excellent product in the Jaybird X4. It is stylish, light, well-built, super comfortable, durable, easy to use, and provides fantastic sound quality. The icing on the cake is its IPX7 water resistance and long battery life. For anyone that asks me to recommend a good pair of wireless Bluetooth earphones, I'll tell them to get the Jaybird X4. It is some good stuff.

The headphones sound OK (flat preset) out of the box. You MUST download the Jaybird app and change the sound in there. You can download presets that people have already made, or make your own. You can mess with the high, mids, and lows it is very advanced. I have the X3, X4, and Vistas. I love Jaybirds. I've returned many headphones (bose, sony, etc) bc they just don't get that loud, leaving me feeling just "Eh they're OK" about them. Jaybirds definitely get super loud and they sound amazing after adjusting the EQ in the app. Great headphones for runners AND for people just looking for good headphones to listen to music.

---- Summary ---- Pros: - Great audio quality - Water and sweat proof - Secure fit - Comfortable during workouts Cons: - Prefer the cable management system of the Jaybird X3 headphones ---- Review ---- Design: As a previous owner of the Jaybird X3 headphones, I am happy that the design of the new X4 model is very similar. I like having the ability to wear the headphones under or over my ears, and the small control module is nonobtrusive and easy to use. What I miss about the X3 headphones is their cable management system that allowed users custom fit the cable behind the neck so that there was minimal to no bouncing while running or working out. While I do like how quick and easy it is to adjust the cable with the speed cinch system of the Jaybird X4 headphones, I preferred the previous model’s cable system. Jaybird made a significant improvement over the X3 headphones by adding IPX7 waterproof certification to this model. While sweatproof coatings often suffice, it is nice knowing that the Jaybird X4 headphones can weather the elements and handle accidental drops into water. Overall, I like the design. My only wish is that clips were included so that the cable management system of the X3 headphones could be used instead of the speed cinch system, if desired. Performance: The Jaybird X4 headphones deliver crisp audio with powerful bass. The default setting is great, but there is also an EQ app that allows for customized sound. I enjoyed the ease of testing different sound settings and found the perfect fit for me. Thanks to the Jaybird EQ app, I have a renewed love for some of my favorite songs to run or workout to because of the audio quality these headphones produce. In addition, the audio has never cut out or distorted, even during strenuous workouts, so they perform very well. Features: After fully charging the headphones, I got a little less than eight hours of music playback. I am satisfied with that battery life and appreciate how quickly the headphones charge back up. Taking calls is easy with the control module, and I have been told that my voice sounds clear on the other end when I am on a call with someone. The control module also allows users to activate Siri or Google Assistant, and I have found that my questions or requests get picked up by the mic accurately. Verdict: If you own the Jaybird X3 headphones and are wondering if upgrading to the X4 model is worth it, I personally do not think it is. There is not quite enough improvement over the X3 headphones. However, if you are looking for a great new pair of headphones for your active lifestyle, I would highly recommend the Jaybird X4 headphones. Along with other admirable qualities, they are well designed, produce great audio, have a long-lasting battery, and they are IPX7 waterproof certified. These headphones do not disappoint.

I really like these jaybird X4 wireless sport headphones. They were easy to pair to my phone and the 3 button controls are easy to get used to. The X4's sound great with a variety of music with really good Highs and MIds with good Bass for in ear speakers. The X4's are very comfortable to wear and feel very secure. I'm no Xtreme workout type of person, but they stayed in place while doing some home repair projects and never had any connection issues with the phone being in the next room. I like that the ear pieces are tethered together as I knocked one out and didn't have to worry about it falling off the roof. Overall these jaybird X4's sound really good, are comfortable to wear, easy to use controls and have great battery life.

So I've never owned any Jaybird headphones however I always read that these are good headphones with great sound. I'm normally a Bose or Sony kind of guy so these were a bit different. As far as wireless headphones go, I prefer all wireless earbuds. Main issue I have with these wired headphones is the sound/vibrations from the wire as it rubs against my neck. I have Jabra 65t's, Bose Soundsport and Sony WF-SP700N earbuds. All of which are really nice. Not a big fan of wired earbuds however these are quite nice. The eaerbuds come with the normal goodies; different sized earplugs, USB charging cable and a coin purse carrying case. As far as sound quality goes, I'm quite impressed with these. To date I like the sound from my Sony SP700's as they provide nice, punchy base. These aren't quite as punchy in that respect however the sound is bright and crisp. Overall, pretty nice headphones. As I haven't used Jaybirds previously, I can't really comment on how these are different from previous versions. However, if you're in the market for some wired "wireless" earbuds then these are a good choice.