Introducing the Stamford Wireless/Bluetooth Headphones from Green Lion. These headphones have a strong 200mAh battery for extended performance. It can charge in just 2 hours and can be used for up to 20 hours. Take advantage of active noise cancellation, pleasant ergonomics, and immersive sound. Enjoy seamless connectivity with BT-5.3 technology while staying in touch with the built-in microphone with a working distance of 10 meters, you can move around wirelessly. Additionally, the headphones have an AUX connector for greater adaptability. The Green Lion Stamford Wireless/Bluetooth Headphones deliver premium audio.