♫♫ Active Noise Cancelling Function --With ANC technology,all you get is Peace and quietness when you put allcaca ANC headphones on, no matter how noisy the outside world is. It's help you to better enjoy music or videos, and avoid external noise interfering.Warm tip: Considering about your safety, please do not wear headphones when walking in the crowded environment. ANC technology is only effective for low frequency noise, but can not eliminate noise.

♫♫ High-quality Built-in Microphone --Combines with software and hardware technology and then constantly optimizing and debugging, thereby this wireless headphone has a deep, accurate bass response, powerful and clear sound, 40mm large-aperture drivers provides you a pleasant listening experience for Hi-Fi stereo sound with powerful deep bass，bringing you a wonderful music world.

♫♫ Multiple Connections & Bluetooth V5.0 --Quickly and stably connect mobile phone or tablet within 10 meters via Bluetooth 5.0. We also provide a 3.5mm jack connector of length of 120cm for PC port. Attention: The headphones is suggested to connect devices often use, and delete Headphone setting in other devices. If no connection, delete the Headphone in the Bluetooth settings and turn off headphones,then press function button for 3s to restart.

♫♫ Soft & comfort Wearing --Designed with pillow-soft protein ear pads without sultry and stressful feeling. Comes with 45°/90°swiveling ear cups and adjustable headband to deliver better durability and comfort.Although the headphone is comfortable for all-day wearing, please take off to relax your ears after every 1-2 hours wearing.

♫♫ Long Working Time --- Equipped with 600mAh lithium battery which needs 3 hours charging time. ANC only mode is suitable for quiet rest, and last for 60 hours use. Bluetooth only mode can last for 30 hours use. ANC & Bluetooth mode lasts for 15 hours, can make you enjoy music in noisy environment.