Original Xiaomi Redmi Buds 5 Wireless Bluetooth Earphone (White)Feature 1. 46dB wide band active noise reduction, which can block 99. 5% of background noise and cover the 2KHz noise range. 2. Three noise reduction modes are available: Deep noise reduction: subway stations, airports Balanced noise reduction: street, gym Mild noise reduction: library, office 3. Provides three transparency modes, allowing you to enjoy music without missing important ambient sounds around you, and you can also grasp the wonderful