This intercom will enable you freely talking between rider and pillion, regardless of the noise of wind. In-ear phone give you real loudly voice and high quality voice with noise cancellation. The stereo audio system will help you enjoy the music from portable audio sets, such as CD, MP3, MP4 and so on. 1. Freely talking with high quality voice. 2. Enjoy stereo audio from portable sets. (CD, MP3, MP4, etc.) 3. Cute appearance for convenient operation. 4. High quality cord for long time use. 5. Lower power consumption 6. Dimensions:23*18*5cm 7. Weight:0.12kg