Avantree HF027 is a 12ft long coiled earpiece with 3.5mm jack. Its coiled cable design provides you a special experience that allows you move all around your cubicle or work area while watching or listening, and allows you to enjoy TV, movies and music from a long distance while sitting on the sofa or chair. Wow, it’s so cool. </b><p> <b>Specifications</b><br> * Speaker size: 13mm<br> * Frequency range: 20HZ~20KHZ<br> * Sensitivity: 104±3DB<br> * Impedance: 32Ω±15%<br> * Cable length( Effective): 3.5m±0.3m<br> *Product size: 13 (MM))<br> *Product weight: 0.09lb <p> <b>What’s in the box? </b><br> * Avantree HF027 <br> * Cable Clip<br> * Carrying Bag<br> * Spare Ear Tips (L&S)<br> <b>Warranty</b><br> We offer 24 Months Warranty for normal use. Live online support, Telephone Support, and email support are available. Video user guide are available also from Avantree site. <p> <b>Support</b><br> Any issues or suggestions, contact us via our US toll free No, Intl number, OR email us and 1 business day reply is guaranteed. We are committed to 100% customer satisfaction. <p>