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. 45 feet wireless range, provides up to 6 hours of Playing Music or Talking with a 48 hours standby time. Perfect fit outdoor Sports. 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.Let you enjoy music anytime.Head measurement: 20.5"-25.2", Size 6 5/8 -- 8. Perfect Electronics GiftThis Bluetooth baseball hat is the Perfect Christmas for men, women, boys and girls, Halloween, Thanksgiving, New Year's Day and birthday gifts . A perfect gift for everyone. Fashion, Comfy & WashableThe simple panel display on the ear of the Bluetooth wireless hat has 3-prompt buttons. Go pass the basic controls of pausing/playing music and be able to answer calls, skip songs, and control the volume. The Bluetooth baseball hat easy-to-remove and reinstall so that you can wash your hat. Hand-washable after removing the Bluetooth modules.