About this Product Dual Master Earbuds - Use either right or left earbud independently of the other. Voice Assistant Functionality - Just tap either earbud 3 times and presto, your virtual assistant will launch on your iPhone or Android device. Hands Free Calling - This headset uses the latest in true wireless technology, ensuring crisp sound and includes a built-in microphone for clear hands-free calling. Enjoy Hours of Music - These comfortable truly wireless earbuds support continues talk & playing for 3.5 hours. Extend the experience for an additional 10 hours with the charging case.