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 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: 80G Packaging included: 1*Bluetooth headband 1*USB charging cable 1*User Manual