The noise cancellation mode adjusts automatically in different environments for a more suitable and comfortable effect. An Ultra-wide Frequency Response Range. From 4 Hz to 48 kHz, the 4-layer polymer diaphragm provides wide frequency response and high sensitivity, delivering true authentic. With file transfer speed up to 960 kbps, the L2HC codec reduces loss of sound quality and restore high fidelity music. Let the ambient sound in whenever you want to have a quick chat or stay aware of the surroundings.This 6-mic system effectively picks up human voices from the background to ensure crystal clear calling. Support Audio decoding: L2HD, AAC. Transmission Distance: 33 feet (10m). 1 x Huawei Freebuds Studio bluetooth 5.2 Headphones. 1 x Type-C Charging Cable. This item is in the category "Consumer Electronics\Portable Audio & Headphones\Headphones". The seller is "timebackstore" and is located in this country: CN.