SHARPER IMAGE SHP894PU Sports Earbuds for Running and Exercise Activities, Built-In Mic, Compatible with All Devices, Purple Compatible With All Devices Including All Generations of iPhones, iPads, Android Tablets, Android Smartphones, Laptops, PCs, Macs, Amazon Fire Tablets, MP3 Players,, Kindles, Galaxy Smartphones & Tablets, And Much More! Non-Slip Ear Hooks, Tangle-Proof Cable, Ergonomic Lightweight Design For Secure & Comfortable Fit Superior High-Definition Sound Quality With Noise-Isolating Rubber Ear Tips Built-in Microphone For Hands-Free Calling, One Click Play & Stop Music, One Click Answer & End Calls Technical Specs: Frequency Range 20-20khz, Sensitivity 97 +/-3dB/mW, Impedance 32 Ohm, Unit Driver 14.2mm, Plug 3.5mm