Powerful function buttons for ondevice control Adjust volume with the plus/minus buttons and control music playback directly on the headset Doubleclick the power button to mute during a call MFB button pressed three times wakes Siri or a voice assistant to dial, answer, navigate and issue other commands Hands calling supports safer driving Allinone wireless Bluetooth earpiece with charging case Integrated storage and charging in one largecapacity case Case full charge time about 1.5 hours 810 hours of continuous calls Up to 48 hours of device life Case can provide 5 extra charges Total standby time up to 400 hours Dual mic noise cancelling and clear call quality Dualmic noise cancelling technology effectively reduces up to 90% of ambient noise during calls sensitivity microphone at 42 ± 3 dB for clear voice pickup Wearing comfort and adjustable fit 345° rotating earpiece and 180° rotating ear hook for flexible fit Can be worn on left or right ear Soft silicone ear hooks provide secure yet comfortable wear with balanced tension for extended use