The Bluetooth Winter Hats hookes up directly by V3.0+EDR bluetooth technology.Easy and fast to pair with smartphonestablets and other Bluetooth enabled music devicesSupport in seconds to make/answer phone call Hands Free.</br>Built-in Li-ion rechargeable batterycharge via USB cablewith up to 60 hours standby modesimple USB recharge and 6 hours of play time up to 10m from your device.(USB charging cable included).</br>Fully Washable: Wash the bluetooth beanie after removing the Bluetooth headphones from the pouches before putting it underwater.</br>Style and Tech Combine: This knit music cap keep your head warm and allows you to listen to your music without having to wear additional headphonesthe bluetooth stereo headset brings you great sound qualitystyle and comfort.Perfect for outdoor sports such as running skiing skating hiking working out dog walking holiday travelling and so on.</br>FULLLIGHT TECH winter hats with Bluetooth are make of 100% soft acrylic---Double knitted beanie to give you Warm and Cordless Music Enjoyment while keeping up with the latest fashion.---100% Customer Satisfaction Guarantee and 180 Days Products Guarantee.</br></br>Product Description</br></br><b>FULLLIGHT TECH Bluetooth Beanie Caps offer you a different Winter Happy time</b><br> <br> <b>Specification:</b><br> <br> Material:100% thick knitting<br> Transmission distance: 10M(30 feet) <br> Charging time: 2 hours <br> Stand-by time: 60 hours <br> Continuous Working time: about 5-6 hours <br> Hat Siz