Retractable bluetooth earbud: control the cord with button; cable free from tangling, you can put it in your pocket or bag with other small objects without any mess or clip on your cloth.
Hand free calling wireless headphone: this bluetooth headphone allows you to leave your phone and sets your hands free for other things but not miss any call. When there's coming call, it will remind you with vibration and independently twinkling the connection button.
Clip earbud: collar clip and flexible pulling design is no kinking and no broken which is in order. It's convenient to clip under your collar and easy to carry.
Multi application : with wireless bluetooth technology, compatible with most smart phones, tablet, pc, laptop, computer. Compatible for samsung galaxy s9, s8, s7, plus, s6, edge, a5, a7, a3, j5, j7, j2, on5, on7, g530, g360,and other android devices, iphone xs max, x, 8, 7, 6s, 5s, lg, v30, v20, k10, k8, k7, htc, huawei , sony, alcatel and others smart phone device