Smart Sensor Technology Moisture Protection Bluetooth 3.0 Headset System Supports Bluetooth Headset & Hands-Free Profiles Single Earpiece Noise-Canceling Microphone Connect to Multiple Devices Call Answer / End Button Reject Incoming Call Switch Between Calls & Music Listening Wind Noise Reduction Up To 7 Hours Talk Time Up To 11 Days Standby Voice Guidance / Announcement Compatible w/ Bluetooth Enabled Cell Phones & Wireless Headsets Smart Call Routing Triple-Mic Active Digital Signal Processing Enhanced Voice Alerts Acoustic echo cancellation Caller Announce Voice Commands Ergonomic All-Day Fit Design On-screen for iPhone, Enabled by Find MyHeadset App for Android