Experience crisp highs, lively mids, and plenty of powerful bass from 10mm graphene drivers. soundcore's Life U2i Bluetooth earphones deliver a wide dynamic range and rich bass via a custom algorithm. Fully-charged, Life U2i gives you a total of 22 hours of playtime. For a quick boost of power, a 10-minute charge enables 3 full hours of listening. They also boast superior call quality and featuring built-in microphone with an AI algorithm that picks up your voice precisely, so that you can enjoy crystal clear calls when you're out and about! The earphones were also built with ultra light materials to provide flexibility and designed with a contoured neckband, so that the Life U2i wireless headphones will feel as if they were never there. IPX5 resistant to water and sweat, the Life U2i is an ideal choice for your adventure-ready lifestyle.