Very good sound directly in your ears, completely wire-free. Not even between the two earbuds. You get well-designed earbuds for each ear that sit comfortably and discreetly in your ear while providing excellent sound quality. The earbuds connect wirelessly to a Bluetooth-enabled device, which is now standard for smartphones or tablets. They charge in the included case, which also functions as a power bank. This allows you to charge your smartphone while on the go. So you always have backup power and wireless sound with you.