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.