Wireless Bluetooth Headset Neckband Vodool Sport In-Ear Earbuds with Mic for IOS and Android Cellphones,White FOLDABLE AND RETRACTABLE DESIGN: The bluetooth headset foldable design is very convenient to carry in your bag for daily use and for travel.You also could retract the cable with one key BUILT-IN MICROPHONE: with 6g CVC noise cancellation, let you enjoy high quality music.Hands-free calling function make you never miss any call when you are doing exercise or even in a noisy environment.The music will go automatically to pause when an incoming call comes in, and it will go back to music automatically when you hang up TWO DEVICES PAIRED: could connect two devices easily to switch calls entertainment. Advanced multi-point V4 technology and MIC mobile devices allow you to play music quickly and communicate with a clear voice LONG BATTERY LIFE: Built-in battery of high performance works on supporting up to 18 hours of talking time and 16 hours of music and 300 hours of standby with a full charge. You can get it fully charged about 2-3 hours UNIVERSAL COMPATIBILITY: with Bluetooth 4.0 technology, the waterproof bluetooth headset is suitable for all smartphones and tablet PC, such as the iOS, Android, Windows phones and other Bluetooth enabled devices