Bluetooth 5.0 & Built-in Microphone: Our upgrade Bluetooth 5.0 technology and Built in two 40mm large bezel driver units ensures fast and stable connections to your Bluetooth devices, offer more stable transmission speed, lower latency and better audio output, which give you wonderful music enjoyment. Headphones wireless provide high-quality built in mic for hands-free clear phone communication, which like talking face to face with your friends. Excellent Battery Performance & HiFi Sound Quality: Beanie hats with Wirless headphones built-in improved rechargeable battery with only 1.5-2 hours charging time, provides up to 10-12 hours working time, 60 hours stand by time. And built-in two high-quality speakers with HiFi sound quality offer up to 110Db HD stereo sound. Clear and loud sound quality without having to fear that the earphones will fall out - enjoy your playlist and take your calls anytime, anywhere! Ship or pick up at my address .first come first served, advance payment can be reserved. I'm in Franklin South.