KEY FEATURES: Quick Charge Bluetooth v5.1 Premium Pitch 2.0+ - More Bass, Less Vibration, with enhanced bass and overall sound quality with 50% reduced sound leakage. Open Ear Technology Prolonged Battery Life - Reliably get up to 8 hours music and calls. Wrap-around Headband - Lightweight and flexible for durability and portability Wireless Microphone - Dual noise canceling microphones exclude surrounding noise, effectively enhancing speech