Features:The Bluetooth headband can keep your head warm; and you can listen to music without wearing other headphones.The Bluetooth headband can protect you from being affected by hair and sweat. At the same time, the built-in microphone let you not miss any calls.Made of acrylic fiber, it is comfortable to wear. What is most important is that it is soft, washable, and breathable.Equipped with built-in 150mAh high-performance battery, the headband can be charged via a USB cable.LATEST BLUETOOTH V5.0 & LONG PLAY TIME OVER 8HOURS. Advanced bluetooth V5.0 not only provide you easy, fast and stable pairing and connection with phone, but also consumes much less power! About 2-2.5hours' charging gain approximately 8hours' playing! Wireless technology allows you to listen to music in a cordless way.Specification:- Color: black/Grey/blue/red- Material: acrylic fiber- Bluetooth version: V5.0- Bluetooth continuous working Time: more than 8 Hours- Indiactor: Red light means charging is in progress.- Transmission distance: 10 meters- USB: Micro USB- Power supply: 150mAh lithium rechargeable battery- Applicable objects: men and women- Charging time: About 2 hours- Continuous working time: up to 3.5 hours- Size: 27cm*10cm-Weight: 80GPackage includes:1*Bluetooth headband1*USB charging cable1*User Manual