Anker Soundcore A25i Bluetooth 5.3, App Custom Sound 28 Hours Playtime Water Resistant 2 Microphones for Clear Calls Unique Earphone Mode - White: Customized Sound: Choose from 22 preset EQs in the souridcore app and customize the tap controls. Use soundcore's signature BassUp preset to boost your bass. Long Playtime and Fast Charging: Get 9 hours of playtime on asingle charge that extends to 28 hours with the charging case. Charge soundc