With 3 flash Led Light Red+blue+green, light will be changed according to your music ,follow the music ups and downs at ear-pad two sides.It is very fashionable . New HiFi Wireless Bluetooth Headphone Headphones headset for Cell Phone/Laptop/PC/Tablet HiFi - Best Audio Performance - Stereo - Sports - Wireless Bluetooth 33 feet distance - Over the head ,Class 2 power level . Built-in microphone Allows clear Phone communication; Enables use as a headset. Music and phone controls ensure ease of use Built-in rechargeable lithium-polymer battery ,charging when the red light, about 3 hours can be filled with, Full red light , 4-6 hours of continuous use, Passive noise reduction Up to 15dB blocks background sounds for an immersive listening experience. Noise Blackout with dual microphone technology promotes optimal call quality.