FULLLIGHT TECH Wireless Beanie offer you a different Winter Happy time.Our company has been selling Wirelss Beanies hats for Sevaral years,we commit to provide the best products to our valued customers.The upgraded wireless hat adopts tip-top Techonology for Faster and Stable signal transmitting,Twice the Battery Capacity for longer music enjoy time,Enlarge the volume output range for better sound quality;Add thickness to beanie for keeping warm.You will not be regret for choosing us.