IREALIST Wireless Earbuds with Charging Case Built in Microphone, Sweatproof Headphone Premium Sound Mini Twins Stereo Headsets Noise Cancelling In Ear Earphone True Wireless &Superior Sound Quality The headset delivers true Hi-Fi sound complete with clear and booming bass. Theyre completely free of wireless, so youll enjoy complete freedom of movement. Built-in Microphone &Noise Cancelling Technology Gives you effective wind noise reduction on calls, lets you enjoy hands-free calls. Helps filter out background noise ensuring that only your voice is heard clearly and with no distraction in every environment. Extended Battery Life, All-day Power The rechargeable battery that delivers up to 2.5 hours of playback/calling and the portable case, adding 9.5 hours and charging your earbuds on the go. Youll get a solid 12 hours of battery life to last you a full day of listening, whether youre commuting, exercising or rocking out. Twins & Single Modes Available Using 2 earbuds simultaneously, which means you can share the same music/movies with someone, and can enjoy the stereo sound by using both earbuds; Single mode: choose the right one or the left one, in single earbud mode, each Bluetooth headset can connect with two Bluetooth devices like your iPhone or Android phone, iPad, tablet, or laptop. Comfortable & Snug Fit Ergonomic design earbuds fits securely in your ears lightweight earbud stay comfortably and securely in place all day long, comfortable enough to use for everyday listening.