Bluetooth 5.0 compliant Wireless Technology and Qualcomm aptX Low Latency support High quality voice pickup for phone conversations and voice assistant access is ensured by 2-micbeamforming technology Improved situational awareness: The Transparent Hearing feature lets you hear your surroundings and easily have conversations without removing ear buds Up to 4 hours of battery life, extended to more than 12 hours with on the go charging via compact case Personalize your audio experience with the built in EQ via the Sennheiser Smart Control app