NOTE: the right pairing operatoinHold the earbud button, don?t release it until blue light andred light blinking by turns (IMPORTANT), it?s pairing status, or it can?t be found by your phone.1.The bluetooth earbud supplies up to10 hrshands-free cell phone musicand calling time (depends on volume), which isone of top records in mini inear single wireless earbud products. 2. Light and Small: 0.15oz small bluetoothphone makes lower burden for long wearing; mini size, nearly hidden in ear. 3. Custom Fit: ergonomics"L"shapedesign and 3 different sized ear plugs ensure a great sungfit in ear. 4. Easy Operation: Easily to answer/endcalls, play/pause music, songs switch (Next) through one button. 5. Multi-point connection: Single WirelessEarphone supports multi-point connection with 2 mobile phones. 6. Suitable with iPhone Samsung andotherAndroid Phones PC TV etc; you also can use this bluetooth earpiece atcarsports trucker office etc This is a SINGLE EARPIECE, so you canlistento your surroundings with the other ear. The Bluetooth headset can easily andquicklyconnect with smartphones, tabletsand other Bluetooth devices. If youcan'tconnect this headphones to your cellphones or other devices, please askus for acomplete FAQ guidance of BluetoothHeadphones, you can find thesolutionsfinally! We'll replace your Earbud if it evergetdamaged! No questions asked.