OVERVIEW: Up to 35dB hybrid active noise cancellation - Effectively isolate excess outside noise: With hybrid active noise cancellation technology, the feed-forward and feedback microphones work together to effectively separate background noise. Whether you're outdoors, on the bus or metro, one-touch for up to 35dB* noise cancellation. Redmi Buds 4 blocks out the hustle and bustle. 3 ANC level options and adaptive ANC mode - Just the right level of quietness: Intelligent scene judgement based...