Product name: Bluetooth music headband elastic anti-slip Product size: 25.5*0.8cm/10.04*3.15in Product color: Simple premium black, gray, Bohemian blue, sports stripe black Product weight: single gross weight of about 100g Material: Polyester fiber Bluetooth: 5.0+EDR Features: removable cleaning, moisture absorption and sweat Duration: 10-13 hours Charging time: 1.5-2 hours Description: 1. Bluetooth Music function: Built-in Bluetooth module, you can connect mobile phones or other audio devices through Bluetooth, enjoy high quality music. Convenient to enjoy music at any time during exercise and rest. 2. Elastic anti-slip design: The headband adopts elastic design, which can adapt to different head circumference and maintain stability and comfort. The anti-slip function can effectively prevent the scarf from slipping off during exercise. 3. Blackout eye mask: with a blackout design, it can be used as a sleep eye mask to effectively block light and help you fall asleep better. 4. Wireless call: Built-in microphone and Bluetooth headset, support wireless call function, easy to call. 5. Multi-functional use: suitable for sports, running, yoga, rest and other scenarios, to provide you with a variety of functions and convenience. Note: 1. Due to different display and lighting effects, the actual color of the item may be slightly different from the color shown on the picture. Thank you very much! 2. Please allow measurement deviation due to manual measurement.