Adaptive Microphones Work together to reduce disruptive background noise Smart Sensors Automatically detects whether or not it's being worn, directing call audio where you expect to hear it Dynamic Mute Alert Dynamic mute alert senses and alerts you if you're talking when you have the microphone muted Sweatproof Nano-Coating Protects against sweat and water splashes (IPX4) Windsmart Technology Detects wind direction and responds accordingly Additional Features Comfortable design Caller ID and voice answer Dedicated voice control Extended range Dynamic mute alert