Engineered FOR Your Best Workout YETBose Sport Earbuds are designed from the ground up to energise your exercise with acclaimed lifelike sound and a comfortably secure fit. Proprietary technologies make your music sound clear and balanced. no matter how loud you turn it up. The earbuds’ sleek design allows them to sit close to your ears. And the eartips won’t hurt your ears no matter how long you exercise and won’t fall out no matter how much you move. Get ready to beat your personal best. again and again.Instant motivationBose Sport Earbuds make your music sound like the performer is right there beside you. pushing you to go one more mile or do one more rep. Our patented acoustic port design and premium. high-efficiency drivers combine to deliver big sound from a small acoustic package. Our signature Volume-optimised Active EQ automatically boosts the lows and highs so that music. videos and voices always sound balanced at any listening level.