1. LED Illuminated Bluetooth Hat That Plays Music 2. Acrylic fiber - also known as artificial wool, has good thermal effect, comfort and elasticity, soft hand feeling, and is not easy to pilling. It is a commonly used fabric for knitted products. 3. Bluetooth support. Support computer, mobile phone, tablet, notebook, 10 meters effective output 4. Listening to songs on a call, no longer need to carry a mobile phone with earplugs, anytime, anywhere, listen to it whenever you want. 5.Ideal gift for family and friend,A great gift for Birthday,Christmas,Anniversary,Mother’s Day,Father’s Day,Valentines Day and so on.Your reliable travel companion for business travel,short trip or for daily use 1. LED Illuminated Bluetooth Hat That Plays Music 2. Acrylic fiber - also known as artificial wool, has good thermal effect, comfort and elasticity, soft hand feeling, and is not easy to pilling. It is a commonly used fabric for knitted products. 3. Bluetooth support. Support computer, mobile phone, tablet, notebook, 10 meters effective output 4. Listening to songs on a call, no longer need to carry a mobile phone with earplugs, anytime, anywhere, listen to it whenever you want.