Let your music motivate you with exceptional sound that stays put. Twist Lock Technology and Flex Soft Comfort Fit guarantee these sweat-proof in-the-ear sport earphones never hurt or fall out, with exclusive Quik Clik Tangle-Free Magnets that make transporting them headache-free. earbuds Inspire 400 allows ambient sound to ensure you hear everything you need to stay safe and provides the ultimate in ease with a 3-button command center and microphone for music, call, volume and voice control that works with your favorite Apple device. Made to move, just like you.