Soundcore by Anker Liberty Air 2 in-ear Wireless headphones come with 4 in-built microphones. These earbuds cancel the unwanted background noise and are noise-canceling buds. Its battery lasts up to 28 hours and the estimated time required for charging these buds is 2 hours. Due to its excellent battery life, one can enjoy listening to music, watching videos for many hours without worrying. You can hear excellent sound quality as these buds provide 15% larger frequency bandwidth and 2x more bass. Download the sound core app on your mobile and connect it with your earbuds. Due to IPX5 technology, these buds are rain-proof and sweat-proof, so you can easily use them during any physical activity. Its weight is 2.1 ounces with Silicone ear cushion material and comes with 18-months Limited Warranty.