Bose Sport Earbuds - True Wireless Earphones - Bluetooth in Ear Headphones for Workouts and Running, Baltic Blue. Gently used. Brand Bose Color Baltic Blue Ear Placement In Ear Form Factor In Ear Noise Control None Model Name Sport Earbuds Wireless Bluetooth earbuds engineered by Bose for your best workout yet..Note : If the size of the earbud tips does not match the size of your ear canals or the headset is not worn properly in your ears, you may not obtain the correct sound qualities or call performance. Change the earbud tips to ones that fit more snugly in your ears Product Note : If the size of the earbud tips does not match the size of your ear canals or the headset is not worn properly in your ears, you may not obtain the correct sound qualities or call performance. Change the earbud tips to ones that fit more snugly in your ears Bose lifelike sound: Makes your music sound like the performer is right there beside you, pushing you to go one more mile or do one more rep. Secure and comfortable earbuds: Customize your fit with the included 3 sizes of StayHear Max tips that won’t hurt your ears and won’t fall out no matter tough your workout is. Weather and sweat resistant earbuds: IPX4 rated. Clear calls: A beam forming microphone array separates your voice from surrounding noise so your callers can hear you better. Simple touch controls: Instead of buttons, the capacitive touch interface lets you swipe up and down for volume control