Professional Active Noise Cancelling (ANC) Technology. Developed using advanced noise canceling technology, the Wireless Headphones effectively blocks out surrounding noises, such as airplane cabin noise, city traffic or a busy office, so you can enjoy listening to music or comfortably watch movies and TV shows .Perfect for using on an airplane, train in the gym or any noisy environment Much Better Sound. Proprietary 40mm large-aperture drivers provide you with deep, accurate bass response. From 75dB to 85dB, the Hetyre HT9 Active Noise Cancelling Over Ear headphones give you crisp, powerful sound and quiet that helps you enjoy your music better. The goal that provides Customers with better sound quality, is our constant pursuit Much Higher-quality Built-in Microphone and NFC Technology. Hetyre HT9 provides high-quality built-in microphones for hands-free calls, Which is convenient for you to free yourself from wires. NFC pairing aided by voice prompts, promises quick and stable connection with your Bluetooth enabled devices, Powerful Bluetooth Function

NATURAL AND CRISP SOUND: Finely tuned 40mm driver units and CSR chip give your music the rich sound it deserves. Mpow H7 offers you bettter overall listening experience.( PLEASE NOTE: 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.) BUILT TO STAY COMFORTABLE & OVAL EARMUFFS ERGONOMIC DESIGN: Memory-protein ear cushions, adjustable headband and oval earmuffs ergonomic design allow for comfortable all day listening. Getting better hearing enjoyment for travel, work and anywhere in between. IMPORTANT HINT&COMPATIBILITY: Please make sure the driver software of receiving adapter is fully updated when connected to PC or laptop, and you need a SEPARATE BLUETOOTH TRANSMITTER when connected with TV,PS4,Google Pixel 2 XL ect. Compatible with iPhone, iOS, TV, laptop, PC, iPad and other devices.