HUAWEI FreeBuds 3i are wireless stereo earphones consisting of left and right earphones and a charging case, and feature an in-ear design for increased comfort when worn. HUAWEI FreeBuds 3i can connect to other devices (such as phones and tablets) using Bluetooth and can be used to make calls and listen to music.The earphones adopt a 10 mm-diameter dynamic driver acoustic design and 3-mic noise reduction to ensure high audio quality during calls. The low power consumption design and charging case provide users with a long battery life. - Ultimate Active Noise Cancellation: While the outward-facing mic is detecting ambient noise to actively counter with the anti-noise, the inward-facing mic is picking up the rest noise in your ears for further cancellation. HUAWEI FreeBuds 3i offers a thorough noise-cancelling experience for your immersive enjoyment. - 3-mic System: HUAWEI FreeBuds 3i comes with two outward-facing mics to accurately pick up your voice while avoiding other environmental noises, and a third inward-facing mic receives the voice conducted inside your ears to further enhance call quality. Everything you say is clear regardless of the noises. - Petit Size, Mighty Sound: With HUAWEI FreeBuds 3i's highly-sensitive diaphragm carefully tuned to deliver authentic, balanced audio and the 10 mm large dynamic drivers delivering powerful bass, you will feel the brilliance of every note in your ears. - Pop to Pair, Ready to Start: Pair HUAWEI FreeBuds 3i automatically with the pop-up window when the charging case is open, and you are good to go. Battery status is also visible when pairing. Instantly enjoy your favorite music.Note: Pop-up window only adapts to Huawei smartphones with EMUI10 or above. - Fill Your Day with Music: One single charge offers up to 3.5 hours of listening pleasure, while the charging case delivers 14.5 hours of battery life that will fill your day with musical joy.