The Music Beanie Hat is a versatile accessory perfect for travel and casual wear, featuring a solid black color with a knit fabric made of acrylic material. It has a built-in wireless Bluetooth technology and a USB charging port for convenience. The beanie is lightweight, packable, and breathable, making it suitable for all seasons. With a classic city and music theme, this Music Hat brand accessory is designed for men looking for a stylish and functional addition to their wardrobe.  Compatible with Apple and Android phones.