ctive noise Cancellation: The Buds Air 2 supports up to 25 dB of noise cancellation and can filter out most low-frequency noise, including the rumble of airplanes, the subway, and other transportation tools. It also cancels out the noise of home appliances so that you can immerse yourself in music or work without being disturbed ransparency Mode: Turn on Transparency Mode to hear sound from your environment, so you can keep up a conversation while wearing earbuds Experience the Upgraded R2 Chip: The enhanced realme R2 intelligent noise cancellation chip combines powerful performance with ultra-low power consu MPtion for a stable connection and a enhanced wireless experienceCrystal Clear Calls: The Buds Air 2 is equipped with dual microphones for superior sound pickup. With our ENC environmental noise reduction algorithm, noise in your surroundings is reduced, so you’ll be able to hear clearly during calls, even in noisy environments