Luxury Products Level,World-Leading Digital Active Noise Cancelling (ANC): Professional ANC technology quells 92% low-frequency background noise of city traffic,office,plane cabin or hubbub.(Kindly note: It’s NOT 100% sound cancellation,CAN’T quell human voice and don’t need to start ANC in quiet environment.) It makes you focus on what you want to hear, enjoy your music, movies and videos. Noise cancellation function can work well both in wired and wireless mode | 40Hours Playtime & Fast Charge: Built-in 750mAH energy-efficiency long-life battery provides up to 40H+ playtime to enjoy your own world without background noise,the 3.5mm audio cable as backup when in low battery.Advanced quick charge function,only 5-mins charge provides 2+ hours playtime,1-2hours charge to be full power.In addition,the over-voltage protection is designed especially for high-end cars Benz,Porsche,etc.,which make your charge faster and safer. | Bluetooth & Hi-Fi Sound: More stable BT5.0 and low latency for fast connection and lossless audio sound,what’s more,dual powerful HD stereo 40mm large-aperture drivers to provide deep bass, clear vocal and high-fidelity stereo sound that create a immerse music environment for you.Sometimes quality just needs to be heard.Find the rhythm of your soul. | Hands-Free Call & Built-in Mic: NC75 Pro is processed immediately with no waiting.Inner noise-cancelling microphones to let you pick up any incoming calls conveniently in clear voice.Support Siri voice control. | World-Class Comfortable & Portable:Very Soft memory-protein ear-pads ensuring lasting comfort and long time wearing, precise sewing process makes for better sound isolation.100° swiveling ear-cups and portable carry case convenient for travel and carry. Stainless steel slider and soft padded headband allows you to find the perfect fit without constraint and provide excellent durability.Exclusive Designs of Air Pressure Balance to reduce sound wave pressure of active noise reduction.