Bluetooth + IR Headphones Over Ear, Hi-Fi Stereo Wireless Headset, Foldable, Soft Memory-Protein Earmuffs, w/Built-in Mic for PC/Cellphones/TV/Car DVD IMPRESSIVE SOUND QUALITY IS THE ULTIMATE GOAL & PLEASE NOTE: 1. This item is passive noise isolating, NOT active noise cancellation(ANC), it can't cancel the noise completely but it won't drain the battery and damage the sound. As an additional factor of sound quality, it is better than ANC. 2. The closed-back design provides immersive Hi-Fi sound with CSR chip and 40mm driver together. If you care more about Noise Cancellation than Sound Quality, you may consider other alternatives. BUILT TO STAY COMFORTABLE: The Memory-protein ear cushion simulate human skin texture, ensuring lasting comfort. The stainless steel slider and softly padded headband allows you to find the perfect fit without constraint and provide excellent durability. BLUETOOTH AND INFRARED WIRELESS MODES: Not only this headphone has Bluetooth mode which can connect to your Bluetooth devices, but also it is a dual channel IR (Channel A or B) headphone, which usually used to enjoy in car entertainment system, good way for kids to enjoy DVD/Music during car trips. HANDS-FREE CALL & BUILT-IN MIC: Gorilla Gadgets Bluetooth headphones provide a quick and stable connection with your Bluetooth enabled devices like cell phones, tablets, pc, TVs within 33 feet, with a high-quality built-in microphone for hands-free calls. Note: The Microphone only works in the Bluetooth mode. FOLDABLE DESIGN WITH A PORTABLE BAG: The foldable Headband is not only designed for saving your desk space but for carrying in the provided bag.