LED Wireless Smart Warm Cap

Flexible stretch material for maximum fitness. Keep your head warm, comfortable wearing and it is breathable to keep dry. 2-in-1 design, more convenient and wireless Bluetooth headset connection to listen to your favorite songs, hands free to answer, or change to the call. The LED lights on the hat provide a great convenience in dark environments. Rechargeable Li-ion battery, charge via USB cable, long standby time. Perfect for outdoor hiking, jogging, skating, cycling, dog walking, winter bus waiting, etc. Specification: Product category: Knitted hat Applicable gender: Neutral/male and female Material:  Acrylic fiber.    Style: Europe and America Processing method: Embroidery Popular elements: Light body Pattern: Monochrome Suitable season: Winter, spring, autumn Eave shape: Curling Color: dark gray / black Circumference of the head: 50-60 cm Bluetooth technology: V5.0 Frequency: 2.402 GHz to 2.480 GHz Spreading distance: around 10 meters Minimum distanc