WiGO GOODS LLC ADIO-3555 ADIO Series, BeAN Retractable Cable Magnetic Clasp Earbuds with Mic - Wired Headsets - Retail Packaging - White Stylish Note: While providing a compact design, hands-free Mic, magnetic clasp, and retractable cable the BeAN Earbuds allow for ease of motion, and communication in all situations. Material and Design: Attaching to your clothing using the magnetic clasp removes slack in the cord reducing cord snag to enhance your listening experience. You can enjoy earbuds exercising or just talking on the phone without the hassle of tangled cords. The 40 inch cable system extends to your desired length for ease of listening and chatting on you phone or wireless device. Standard 3.5mm audio jack, 40 inch audio cable length with Magnetic Clasp, Built-in Hands-Free Microphone, Earbud Headphones with 15mm driving unit. Freq Range: 100Hz-3000Hz, Impedance: 32 Ohms, Sensitivity: 111dB/1mW