Unique Design: Secure and comfortable clip design allows airflow. Clear Sound Quality: Titanium-coated diaphragm delivers clear sound even in noisy environments. Water Resistant: With an IPX4 rating, it can be used for outdoor activities without worrying about splashes or sweat. Long battery life: Up to 30 hours of listening on a single charge. Fast charging: 10 minutes of charging provides 3 hours of listening time.