Active Noise Cancellation (ANC) technology: For ambient noise cancellation and an immersive audio experience. Clear Calling: ENC technology for clear calls even in noisy environments. High-quality Sound: Hi-Fi and HD stereo sound for an exceptional listening experience. Long Battery Life: Up to 4.5 hours of playback time and 20 hours with the charging case. Fast Charging: About 1.5 hours of charging time via the Type-C interface. Universal Compatibility: Works with most wireless devices using Bluetooth V5.2.