Immerse yourself in pristine, detailed audio and near-total tranquility with the soundcore Q21i Over-Ear Noise-Cancelling Wireless Headphones. Featuring advanced Hybrid Active Noise Cancellation, 2 internal and 2 external microphones work together to reduce up to 90% of ambient noise, effectively silencing distractions like plane engines and city traffic. The oversized 40mm dynamic drivers deliver powerful, thumping bass enhanced by BassUp technology and clear, rich soundscapes. For the ultimate high-fidelity experience, use the included cable for Hi-Res certified audio. Control your world with a simple tap. Instantly switch between three modes: ANC for quiet, Normal for everyday, and Transparency to hear your surroundings clearly when you need to be aware. Enjoy up to 40 hours of phenomenal playtime with ANC on, or an incredible 60 hours in standard mode. Forgot to charge? A quick 5-minute charge provides 4 extra hours of listening. With seamless Bluetooth 5.0, connect to two devices simultaneously and switch audio effortlessly between your laptop and smartphone. Further personalize your sound with the soundcore app, offering a customizable EQ with 22 presets and white noise options for ultimate relaxation. Designed for your on-the-go lifestyle, these foldable headphones are your perfect companion for focused listening and crystal-clear calls.