The Bose QuietComfort Earbuds wireless earphones are equipped with active and passive noise-canceling technology. This adjustable feature means you can cancel out unwanted noise or be more aware of your surroundings if you’re out running, for example. They also feature an acoustic package to produce deep low notes and exciting, lifelike sound, no matter the volume. In fact, the volume-optimized Active EQ technology allows you to still receive high-quality bass even at a low volume. The Bose QuietComfort Earbuds stay in your ear at all times. The patented ear tip prevents them from falling out. Also, the StayHear Max tip design means that every part of the earbuds that makes contact with your ears is soft silicone for comfort. Finally, with four microphones, people will hear your voice when you answer a call because it limits any background noise.