EarFun Air 2 NC Wireless Earbuds Bluetooth 5.3 / Up to 45dB Noise Cancellation 【3D Surround Hi-Res Audio Experience】The Bluetooth-compatible, fully wireless earbuds EarFun Air 2 NC are equipped with LDAC and 3D surround sound technology, and comply with the Japan Audio Society's Hi-Res Wireless standard. With a high sampling rate of 24-bit/96kHz and a bit rate of 990Kbps, they meticulously depict every detail of each sound. They play high-resolution music wirelessly and provide 360° surround sound. *3D surround sound requires the Theater Mode to be turned on in the app. When Theater Mode is on, the EQ cannot be set. If you need to set the EQ, please turn off Theater Mode. 【QuietSmart 2.0+ Adaptive Hybrid Noise Cancellation】Equipped with EarFun's proprietary QuietSmart 2.0 noise cancellation technology, it reduces noise by up to 45dB. Even in noisy environments, you can enjoy an immersive music experience. Three noise cancellation modes are available: Deep ANC mode, Adaptive ANC mode, and Wind Cut ANC mode. Adaptive ANC mode adapts to the structure of the ear canal to achieve the most comfortable and effective noise cancellation effect. Wind Cut ANC mode is effective in reducing wind noise. 【Up to 40 Hours of Playtime】By adopting energy-saving technology and a high-performance battery, continuous music playback of up to 9 hours (ANC off) is possible on a full charge. Up to 40 hours of music playback is possible when combined with the charging case. It also supports wireless charging and fast charging, allowing for 2 hours of use with a 10-minute charge. *Playback time may vary depending on volume, sound quality, noise cancellation mode, etc.