Hybrid Active Noise Cancelling: 2 internal and 2 external mics work in tandem to detect external noise and effectively reduce up to 90% of it, such as planes and car engines Immerse Yourself in Detailed Audio: The noise cancelling headphones have oversized 40mm dynamic drivers that produce detailed sound and thumping beats with BassUp technology. Compatible with Hi-Res certified audio via the AUX cable for more detail 40-Hour Long Battery Life and Fast Charging: With 40 hours of battery life with ANC on and 60 hours in normal mode, you can commute in peace without thinking about recharging. Fast charge for 5 mins to get an extra 4 hours of playtime Dual-Connections: Connect to two devices simultaneously with Bluetooth 5.0 and instantly switch between them. Whether you're working on your laptop, or need to take a phone call, audio will automatically play from the device you need to hear from App for EQ Customization: Download the soundcore app to tailor your sound using the customizable