The Jaybird X4 sports headphones have a lot going for them. They're well-designed and sound good, plus they're pretty good at staying nicely in your ears. The app is a nice touch too - allowing you to customize the frequency response to your preferences.

I don't leave reviews often, but these headphones are just so underwhelming. Bluetooth drops in and out. Sounds quality isn't that great (especially for $130). Battery life has dwindled after a few months of use. Just overall unsatisfied with these.

These headphones are in my opinion the best wireless sport headphones there are. Only problem, and this is the only reason for the missing star, is that they are not grey. They are green. Still it's the sound I wanted

It's early days for me but having tried them out for the first time using the included comply foam tips is that these are very comfortable and securely fitting earbuds with great sound.

I have only used these headphones for a couple of weeks and very impressed so far. Easy to pair, easy to use, good clean bass, and does not slip out when I sweat.

Out of the box I was very excited to receive these headphones. I purchased them with the express purpose of utilizing them in conjunction with my Peloton spin bike. It was difficult to get the Peloton to recognize and then sync with the headset at first; but once I crossed that hurdle everything...

Packaging -Aesthetics

-Sound quality is marginal -Depends on your use Syncing is poor -Jaybird Support is terrible -Charging cord is ridiculously short and the connection is troublesome -Control Location is right up against your head and difficult to reach / use

Is what it says it is, excellent sound quality.

With an IPX7 water-resistance rating and redesigned wing tips, the successor to Jaybird's X3 wireless earbuds are good-sounding sports earphones prepared for wet weather.

Engaging sound; Firm fit; Useful sound-customization

Some hardness on upper mid treble; Slow-to-respond remote

Offering a comfortable fit, outstanding waterproofing. and pleasing, adaptable audio at a reasonable price, the Jaybird X4 wireless sports earphones are a great choice for anyone looking for a new pair of Bluetooth earbuds.