Stable Bluetooth 5.4 Connection: This Bluetooth knit hat features a built-in Bluetooth 5.4 chip, ensuring a stable connection outdoors and allowing simultaneous connection to two phones. Its large 30mm dynamic driver speaker delivers powerful and clear sound quality. This hat is ideal for hiking. This Bluetooth knit hat with LED light offers stable performance for everyday use. Long-lasting Rechargeable Battery: This illuminated knit hat is powered by a reliable 700mAh battery, providing over 10 hours of talk and playtime, with the LED light lasting 2-8 hours. Suitable for extended fishing trips and work. An ideal Christmas and birthday gift. This illuminated winter hat boasts long-lasting battery life, giving you peace of mind when needed. Convenient USB-C Charging: This illuminated Bluetooth knit hat supports USB-C charging. The USB-C interface connects to power banks and laptops, fully charging in approximately 2 hours. Convenient and worry-free charging during outdoor travel. Comfortable Experience, Perfect Gift: This men's Bluetooth hat is made of 100% acrylic fabric, offering a comfortable feel and effective windproof and warmth. It supports hands-free calling and effectively protects against snow and sweat, making it an ideal gift for Valentine's Day and Thanksgiving. This headlamp cap provides all-around protection. Easy Touch Controls: This unisex Bluetooth cap is simple to operate. A single click manages and makes calls, while a long press adjusts the volume. The user-friendly interface makes it easy to use even while shoveling snow. This Bluetooth cap frees your hands in all situations.