Jaybird X4 review:PROS and CONS


I’m Dynamic Ninjya(@dynamic_ninjya) ,a stay-at-home dad in Japan.

Today, I’m going to write PROS & CONS about the “Jaybird X4.”

About me, please see my Biography.

What’s in the Box?

Jaybird X4 is coming with these;

  • wireless earbuds
  • Silicone ear tips(S/L)
  • Comply memory foam ear tips(S/L)
  • Ear fins(S/M/L)
  • Shirt clip
  • Cord clip
  • Charging cable
  • Carrying bag


Inside of the carry bag is vivid yellow.



  • 8 hours of battery life
  • Waterproof(IPX7)
  • Bluetooth 4.1
  • can change EQ setting with Smartphone App


I can catch fish with wearing this earbuds!


How I feel

It is super light!

I was amazed. It is so comfortable.

And also it is looking so good.


The cord is not too long.


You can easily adjust the length of the cord with cord clip.



the sound

The sound of Jaybird X4 is far better than the earbuds coming with iPhone.

You can adjust the EQ setting with the App.




  • light weight and comfortable fitting
  • can change EQ setting
  • looking cool


Looking cool is very important for me to choose earbuds.

I want it !



There are just 2 CONS ;

  • I cannot lose the charging cradle
  • sounds delay when watching movies


If you lose the charging cradle, you have to buy another set.

And when you watch movies, the sound delay.

Jaybird X4 is the Sports earbuds.

Jaybird X4 is for sports

I recommend Jaybird X4 for people ;

  • running
  • training at Gym
  • farming
  • sweating a lot


I became a big fan of Jaybird.

I really want to try another products of Jaybird like “Jaybird Run.”

I will make “Jaycat” earbuds !




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