Specification:

• It's an ordinary wool knit hat that can keep warm in winter                                                    
• It's also a stylish earphone that you can listen to music anywhere you go                                              
• A button on the cable for answering mobile phone directly
• Compatible with MP3, Mobile, iPod, iPhone
• Powered by iPod/iPhone                                                                                  
• Power: 1W×2                                                                                              
• Product N.W.: 107.4g (approx.)