ZEALOT B20 Stereo Wired Wireless Bluetooth 4.0 Subwoofer Headset with 3.5mm Universal Audio Cable Jack & HD Microphone, For Mobile Phones & Tablets & Laptops 1. Whether you are an audiophile or casual listener, when it comes to choose a headset, this item is your prior choice. 2. ZEALOT B5 has superfine titanium alloy diaphragm, enclosed sound chamber, stereo sound field, low distortion rate, HiFi tone quality. high tone quality and 90 degrees foldable design make it the perfect headset for those audiophile. 3.The imitation protein material is used as the ear skin with a soft characteristic sponge, which is still breathable even if worn for a long time 4. Wide compatibility. compatible with 99% electronic devices with bluetooth function, you can enjoy your favorite music whether when you are home or out with your phone or tablets. 5. Equipped with 3.5mm audio port, connect to mobile phone tablets or notebook to listen to music are accessible. 6. Built in 400mAh battery, 1-2 hours charging time, long use and standby time.