Why an anti-radiation earphones is essential? The damage from mobile devices radiation is an invisible and cumulative process. Electromagnetic wave absorbed in body is difficult to be released, which is harmful to our brain, hearing, eyes, and skin, very unhealthy. To solve this problem, we invented a Radiation Free Headset that is brain protective from daily mobile phone life. You can enjoy the wonderful music in a healthy and safe way with our Anti-radiation Earphone. It's a small, smart and ultra-safe headset that you from almost all electro-magnetic radiation when listening to music. FC12 Air Tube Anti-radiation Earphone is your best choice for healthy life. Features: 1.Anti-Radiation Function: Metal shielded wire, dual sonic concentrator, no magnetic field radiation metal cavity, and the air tube, perfectly achieve 99% Radiation reduction, suitable for various people, like kids, pregnant women, etc. 2.Perfect Sound Quality: Built-in high-performance microphone and noise cancelling rubber ear tips,offering you perfect sound and clear communication experience. 3.Convenient controlling music and calls: This headset supports easily controlling your music. It also supports hands-free function,free your hands from answering the call. 4.Comfortable to wear: Unique Anti-drop" earbuds offer a comfortable and secure fit. 5.Fully Compatibility: Uses international standard port (CTIA), high-quality 3.5mm plug is compatible with most 3.5mm audio devices such as, for iPhone 6 6Plus 5S 5 for Samsung, Smart Phones, Desktop, Notebook, Player, MP3 / MP4, cell phone, tablet, etc. Specifications: Speaker Diameter: Φ8mm Sensitivity: 93±2dB Frequancy Range: 20HZ-20KHZ Impedance: 16Ω Cable Length: about 132cm / 4.33ft (Include Air Tube Length) Air Tube Length: about 15cm / 0.49ft Headset Weight: 21g / 0.74oz