Wireless Bluetooth : Enjoy the freedom of wireless connectivity with this headphone set. Colorful Light : The colorful light feature adds a fun and unique touch to your music experience. Pluggable Card Game : The pluggable card game feature allows you to play your favorite card games without leaving your seat. Music Movement : The music movement feature allows you to move to the beat of your favorite songs with ease. Specification Bluetooth receiving distance: 10 meters Battery capacity: 400 mAh Bluetooth version: 5.0 Noise eliminator: CVC6.0 Standby time: 360 hours Call duration: 4 hours Notice 1. Photos was been shoot based on real products and a professional camera, due to the light and the screen display being different, there will be a certain color, which can not be avoided, it is not a quality problem. 2. Due to the personal measurement technique being different and the elastic fabric of the material/There may be a 1-inch error the physical, Please choose the size accordingly.