Extra-bass, powerful music experience. soundcore signature EQ and Bass-Up EQ, give you powerful music experience. AI-Enhanced calls with 2 mics for better quality 9-hour playtime, 28 hours with charging case App for Personalization: Tailor your experience by customizing your sound 20 more Preset EQ available in the App Anker - Soundcore Life A25i True Wireless Earbuds