42 dB active noise cancellation with Transparency and Smart Adaptive modes, plus a 12.4 mm bio-fibre driver tuned by Dirac and Ultra Bass Tech 2.0 for rich, balanced sound12.4 mm driver along with Ultra Bass Technology 2.0 lets you fine-tune bass levels in real-time for a truly customized listening experienceBattery life: 35.5 hr | Charging time: 10 min charge for 5.5 hours playback, 89 minutes for complete charging case charge42 dB Smart Active Noise CancellationIP54 water and dust resistanceDual-device pairingLightweight and ergonomic with a matte and glossy finish along with lanyard hole for easy portability4 HD microphones that work with AI-powered Environmental Noise Cancellation (ENC)Bluetooth version: 5.4 with wireless range: 10 m