Bluetooth Earhook Style Noise-Canceling Microphone Multipoint Technology Switch Between Two Bluetooth Devices Call Answer / End Button Reject Incoming Call WindSmart Technology For Crisp & Clear Sound Reduces Whistles & Static in Windy Environments Up To 6 Hours Talk Time Up To 5 Days Standby Compatible w/ Bluetooth Enabled Cell Phones & Wireless Headsets Last Number Redial Smart Sensor Technology Streams Music, Podcasts & More Vocalyst Voice & Text Service A2DP Streaming Audio Profile Enhanced Voice Alerts Avoids Accidental Dialing Ergonomic All-Day Fit Design Apple iPhone Battery Meter Click to download User Manual So Smart, It Knows When You Can Talk: -Smart Sensor&trade technology knows whether to send calls to your mobile phone or your headset -Put it on and you ve answered the call So Smart, It Manages Your Calls: -Eliminates accidental dialing by locking call button when headset is not worn -Streams music, podcasts and more -Pauses streaming audio for calls or when the headset is taken off -Triple tap of Call button dials Vocalyst voice and text service -Plantronics MyHeadset app gives you tips, tricks and tools for Android-based phones -On-screen battery meter for iPhone and Android 3.0 or higher smartphones -Experience brilliant, HD streaming audio plus natural, clear calls -Voice alerts announce talk time, volume, connection and more -Ergonomic all-day fit