Mpow V4.1 Magnetic Control Bluetooth Headphones Wireless in-Ear Earbuds Wearable, Apt-X Stereo Earphones w/Mic Innovative Magnetic Sense Control: This magnetic headphone is not only design for wearable but functional, make it more convenient to carry when not in use and easier control: Detach to answer phone calls/play music, adhere to end phone call/music. 7-hr Battery Life: Up to 7 hours of continuous talking/music time and 175 hours of standby time keep you connected socially and musically while at home/ office or on the go. Connect Two Devices: You can seamlessly switch between your business and personal phones, won't miss any calls. Latest Bluetooth 4.1 Version: Easy and fast pairing with your Bluetooth-enabled devices in 32 feet, If you can't connect it to your cell phones or other devices in any case, please ask for a complete FAQ guidance of Bluetooth Headphones before judging them defective since Mpow has a strict Bluetooth standard, you can find the solutions finally. Universal Compatibility: Compatible with most cell phones, tablet PCs and other Bluetooth-enabled devices, including IOS, Android, Mac, Windows, etc.