The Sony WH-CH520 Wireless Headphones are a stylish and functional on-ear headset with a built-in microphone, making them perfect for calling and multimedia use. These Bluetooth headphones offer a 50.0-hour battery life and are easy to charge with their rechargeable battery. With a sleek design in blue, these classic-style headphones weigh 1.37 pounds and come with media control features for added convenience. Perfect for adults, these wireless headphones from Sony provide clear audio with a dynamic driver and support Bluetooth technology for seamless connectivity.