Coeuspow Beanie Music Hat, 4.1 Wireless Smart Beanie Headset Music Cap with HD Stereo Speaker,Built-in Mic, 100% Soft Acrylic,Hand Free for Running Skiing Skating (Grey) PERFECT MUSIC EXPERIENCE: Enjoy advanced digital sound for your music, balanced deep bass, dynamic mid-range & crystal clear high notes while staying warm, high performance stereo speakers. BLUETOOTH 4.1 TECHNOLOGY: Easy and fast to pairing with cell phones, tablets and other enabled music devices,wireless range up to 33 feet. SOFT & COMFORTABLE FABRIC: 100% Soft-Spun Acrylic, double knitted beanie,keep your head warm , Stretchable high quality knit material to fit all sizes and shapes. FULLY WASHABLE & LONG-TIME STANDBY, Easy to remove and re-install headset speaker driver from the beanie for washing .Build-in rechargeable battery ,over 6 hours playing time. SECURE-FIT FOR MOST INDOOR &OUT DOOR LIFTSTYLE. Such as running, skiing, skating, hiking, camping, dog walking, holiday travelling and home office working so on. 12 month warranty and friendly customer service.