Bought a pair of Treblab X5 on Amazon because I was tired of my usual wired headphones. Glad I did. The earbuds fit perfectly, so this purchase was a huge win for me because I like doing a lot of sport. I have had no issues with the earbuds even during workouts. Pairing the product is as easy as can be, simply just turn on bluetooth on your device and take the earbuds out of the charging case.