The Heyday Wireless Black Headphones are stylish and convenient wireless Bluetooth headphones with a sleek black color and a comfortable headband design. They offer up to 40 hours of playback time and have a built-in microphone for hands-free calls. These headphones are perfect for live monitoring and provide a high-quality audio experience while on the go. With both Bluetooth and 3.5mm jack connectivity options, these Heyday headphones are versatile and suitable for various devices.