Feature:1. Applicable: Air duct headphones are suitable for portable music players such as for iPhone, for Galaxy and for NOTE series, for Nexus, for HTC, for iOS tablet, for Laptop, Tablet, etc.2. Ergonomic Design: Air tube earbuds feature ergonomic soft silicone ear tips that fit perfectly, won't fall off and can effectively isolate external noise, perfect for travel, running, fitness or gym.3. Radiation Free: The radiation free headphone uses a non magnetic field radiation metal cavity and trachea to reduce radiation and is suitable for children, pregnant women, etc.4. Binaural Design: The 3.5mm air tube headset uses binaural earbuds, stereo sound quality, enjoy excellent sound quality, and can also use the sound controller to manage music and calls.5. Portable: The binaural air tube earbuds can be connected to any mobile device compatible with headphones, and the lightweight design provides great convenience for you to carry.Specification:Item Type: Air Tube EarbudsMaterial: Silicone, PULine Length: Approx. 120cm/47.2inPlug Diameter: Approx. 3.5mm/0.14inHorn Diameter: Approx. 10mm/0.4inImpedance: 32Appearance Type: EarplugsTechnology Category: CapacitiveTransmission Method: WiredSensitivity: 113dB.Package List:1 x Air Tube Earbuds4 x Replacement EarplugsNote:Please allow some errors due to manual measurement.