HA-FR50-A/B/P/S Soft marshmallow in-ear canal headphones with iPod/iPhone/iPad remote & microphone. Comfortable & secure-fit in ear canal headphones with two sizes of softer memory foam earpieces & just-fit body makes better isolation from background sound. To make sure these earphones are the ultimate in comfort they are supplied complete with a set of two earpieces so you can easily alter the earphones & choose the buds that are the perfect fit for you. The J V. C HA-FR50 headphone remote offers. Play stop skip+/-Search +/-volume +/-call voice memo usability functions. Optimised for MP3 iPod iPhone CD players & portable gaming systems if you love crystal clear sound whilst listening to music then these are the earphones for you. Avoid using headphones with the volume turned up for an extended period of time. Doing so can damage your hearing. It is advisable to keep the volume at a moderate level at all times. For your own safety please do not use when driving or cycling. Technical specification: Driver Unit: 8.5mm Magnet type: Neodymium Frequency Response: 8-2.000 Hz. Nominal Impedance: 16 ohms. Sensitivity: 102d B/1 m. W Max. Input Capability: 200 m. W (IEC) Cord Length: 1.2m Weight (without cord): 3.2g Plug: iPhone compatible Gold plated Microphone sensitivity-44 d B. (0d B=1V/ Pa) Accessory: 2 size memory foam earpieces.