This wireless stereo headset is a great idea for an active enjoyment life. It allows you to listen the powerful bass and high quality stereo sound whilst you are running or playing sports. Easy to operate buttons, you can play, skip and pause music, control volume and pick up calls. Your Bluetooth headphones would pause the music automatically when a call comes in and would go back to music automatically when you hang up. Enjoy the life with this perfect headphone. Bluetooth 4.0, Battery 3.7V 150mAh, Standby time is up to 300 hours. Talk Time is up to 3 Hours. Music Play Time is up to 2-3 Hours.