Music is a super companion for humans、 which can make you relaxing and enjoy colorful life.The BYZ K30 is the best one for you、 which is stylish and high-performance headset and is characterized by echo cancellation and noise cancellation technology、 high-performance speaker &amp; built-in Microphone. BYZ K30 offers you wonderful music and clear communication、 you can greatly enjoy your favorite Music、 a super companion for you during daily life and travel.<br><br>BYZ K30 Features:<br>[High-performance Speaker &amp; Microphone]<br>Equipped with 9mm Speaker &amp;High-grade microphone、 employs echo cancellation and noise cancellation technology、 offering you wonderful music and clear communication.<br>[Super Sport Headphone]<br>Specially designed for sports (jogging、 traveling、 hiking、 etc.)、 secure wearing way、 lightweight and compact portable size、 comfortable to wear it without oppressive feeling.<br>[Enjoy Music &amp; Call]<br>Professional headset、 perfect for listening to music、 answering incoming call、 etc.<br>[Comfortable to wear]<br>*Earmuffs with soft and skin-friendly leatherette has great permeability and is comfortable to wear、 and can greatly insulate the sounds around you.<br>[Fully Compatible]<br>*High-quality 3.5mm plug is compatible with any music device using 3.5mm port such as、 for iPhone 6 6Plus 5S 5 Samsung、 Smart Phones、 Desktop、 Notebook、 Player、 MP3 / MP4、 cell phone、 tablet、 etc.<br><br>Specifications:<br>Brand Name: BYZ<br>Model Number: K30<br>Speaker Diameter: 8mm<br>Frequency Range: 20Hz ~20、000Hz<br>Sensitivity: 93&plusmn;3dB (at 1KHz 1mW)<br>Microphone Sensitivity: -42dB&plusmn;3dB<br>Impedance: 16¦¸&plusmn;15%<br>Connecting Plug: 3.5mm Audio Plug    <br>Headphone Color: Black、 White (Optional)<br>Cable length: 120cm / 47.2in<br>Headphone weight: Approx. 16g / 0.59oz<br>Package size: 16.0 * 9.0 * 3.0cm / 6.29 * 3.54 * 1.18in<br>Package weight: 60g / 2.12oz<br><br>Package List:<br>1 * BYZ K30 Headphone<br>2 * Pair of Earplug