Product Features: 3.5mm interface FM radio antenna, replacing the traditional headphone antenna antenna. Convenient, practical, good radio effect! Suitable for multiple brand models with FM radio function plug-in speakers / mobile phones. Product Parameters: 100% brand new and high quality Color: black Length: about 10.20cm/4.02" Jack: 3.5mm Male Gain: 5 dBi Quality: 1pc Enhance the digital/analogue signal and strength signal quality Easy to install Gold plated connector for better signal transfer Package List: 1x Cell Phone External Antenna