1. very high quality . 2. competitive price in the market 3. new designed fashionable headphone. Stereo headphone(1) SPECIFICATIONS:Speaker: Φ40mm Impedance: 32Ω Sensitivity: 100dB +/-10% Use: mp3/mp4 player, iphone, ipadMaterial: ABS,Silicone Plug: 3.5mm stereoCable length: 1.2M+/-10% Frequency response: 20-2000HZ (2) packing details: polybag or blister or customized packing Wired Stereo Headset ...