Elevate every beat with Certified Hi-Res Audio with LDAC. Experience enriched highs thanks to coaxial triple drivers. Enjoy up to 55dB active noise cancellation with multi-level adjustments. Immerse yourself in built-in dimensional audio with head tracking. Benefit from up to 4kHz ultra-wide frequency noise cancellation for an upgraded audio quality. The custom coaxial triple drivers deliver Hi-Fi evolved sound quality. An outstanding coaxial triple driver design, building on the dual driver design, adds a high-frequency piezoelectric driver to reproduce more details in the treble, enhancing the depth of sound. With support from a professional audio codec, it allows you to enjoy exceptional sound quality. Dimensional audio with head tracking supports music, video, audiobooks, and games, providing impressive surround sound effects at all times. The Xiaomi Acoustics Lab conducts in-depth tuning and offers ample EQ settings to satisfy your demands. Achieve deep noise cancellation with up to 55dB active noise cancellation and 4kHz ultra-wideband, delivering significant improvements in depth and level of noise cancellation to suit multiple usage scenarios. This includes +40% noise cancellation depth and +14.16% total ANC. Specifications: Dimensions: H:3.5 x W:10.0 x D:10.0 cm Weight: 0.1 kg Colour: Purple Guarantee: 2 Years Model Number: BHR9317GL