Bluetooth Headphones SGIN Lightweight Noise-isolating Wireless Sports Headphones Dual Audio Stereo with Detachable-all Bluetooth-enabled Devices (Colorless) Designed for music enthusiasts a customized Bluetooth wireless sports headphones. Lightweight, flexible earhook, noise isolation, high-fidelity stereo, four speakers, built-in microphone, removable headphone cable. Through the button to answer calls, adjust the volume, switch songs, the phone to remind, and pre-call number is read out. Wear comfortable, ergonomic design, provide comfortable experience during exercise. It supports all Bluetooth-enabled devices, Android and IOS-battery can be connected to two devices.