Material: Cotton Bluetooth Headphones & Sports Speaker 2 in 1Bluetooth Speaker hat allows you to listen to your music without having to wear additional headphones.Microphone to let you won't miss any callings.Perfect suitable for gym,Fishing,running,skateboarding,mountaineering, camping,skiing and other outdoor activities. Wireless Bluetooth Technology Wireless Music hat pair with any Bluetooth-enabled smartphone or tablet devices quicker & easier. 35 feet wireless range, provides up to 6 hours of Playing Music or Talking with a 48 hours standby time. High Quality Audio Bluetooth Speaker hat has excellent stereo sound quality output that makes pairing to smartphone or tablet device quick & easy.True HD HIFI sound featuring great sound quality.