Powerful Bass with A Large Driver Anker R50i introduces a true audio powerhouse that harnesses the power of a 10mm driver to deliver an exceptional sound experience. The large driver assures offering extra bass and even if you turn up the volume, you still listen to pure sound enhanced with high bass. Outstanding AI-Calls The next level of phone call clarity is truly attainable with Anker R50i. Amazingly, it's equipped with AI-enhanced technology and dual microphones that ensure crystal clear conversations and an exceptional call experience. Anker Soundcore R50i are IPX5 waterproof That's why they are built to withstand any adventure, allowing you to enjoy your favorite tunes without any concerns about water damage. Roomy Battery That Stays Long Don't stop the music with Anker Soundcore R50i since it provides 10 hours of playtime on a single charge that extends to 30 hours with the charging case . And, if you are in a hurry, charge for 10 minutes to get 2 hours of enjoyment. With its impressive battery life, the Anker R50i allows you to indulge in your favorite tunes for extended periods without interruption.