[Active Noise Cancellation] Three mics on each bud detect and analyze ambient sound in your environment. Shake it up with noise-cancelling counter-frequencies (up to 40 dB noise reduction) to reduce wind and ambient noise. Hear your world in breathtaking clarity with Transparency Mode.Note : If the size of the earbud tips does not match the size of your ear canals or the headset is not worn properly in your ears, you may not obtain the correct sound qualities or call performance. Change the earbud tips to ones that fit more snugly in your ear.Specific uses for product : Home,Sports and Exercise [Superior Audio Experience] Acoustically tuned for bigger, bolder beats with razor-sharp treble, with Dolby Atmos support, it’s time to bring your party wherever you go. [Play Time Never Ends] With a monster battery life up to 38 hours, power your party all day and night – and all day again. With Dash Charge, a 10-minute charge powers your music for 5 hours. [Fast and Smooth Pairing] Sync to your Android smartphone as soon as you open the charging case – it's that fast. [Calling Loud and Clear] AI powered noise reduction algorithms, noise-reducing microphones, and an elegant design all combine to enable crystal-clear calls. [All-Go in All-Weather] Rated IP55 for water and sweat resistance, the OnePlus Buds Z2 are perfect for outdoors and the gym.