SoundCore R50i NC Bluetooth Earbuds That Are Actually Wireless 42dB Noise Reduction with Adaptive ANC 42dB ANC depth is used to cut down on background noise. To deliver the best noise reduction experience, adaptive ANC continuously monitors ambient noise. For optimal noise reduction in various environments, use a multi-mode ANC. Strong bass and distinct vocals: For crisp sound and strong bass, use 10mm drivers in conjunction with exclusive BassUpTM technology. Cell phone holder hidden: The case has a hidden cell phone holder that makes it easier to watch movies and browse the Internet. Al-Powered Calls: Improved calls with four microphones and a unique Al algorithm. Ten hours on a single charge: 45 hours of total play time, including 10 hours of music. IP54 Superior level of water resistance, dust resistance, and sweat protection