Comfortable acrylic material Made of high-quality acrylic material, soft and warm, bringing excellent using experience. Bluetooth 5.0 Supporting Bluetooth 5.0 wireless connection, bringing stable and quick transmission, practical and convenient. USB rechargeable The USB rechargeable design can support a long working time, easy to find a suitable power supply. Detachable The detachable structure makes it easy to clean. Scope of application Widely suitable for travel, running, riding, winter, and so on. Specification: Type: Bluetooth beanie Quantity: 1pc Material: acrylic Color: black Bluetooth: 5.0 Battery: built-in battery Interface: USB Size: 22.5*22cm/ 8.84*8.65inch(L*W) Net weight: 122g / 4.3oz Package: 1* Bluetooth beanie 1* scarf 1* cable 1* manual