Runner 40 by Back Bay Brand

Fulfilled by our friends at Back Bay Brand Built For Athletes: Our hook design keeps the earbuds securely in your ears. Focus on your workout, not your earbuds Great For Small Ears: These earbuds are made to adapt to ears of all sizes Waterproof: Power through rain, sweat, and even showers. The earbuds use internal nano-coating to create IPX7 waterproofing. 30 Hours of Battery Life: Months of workouts on one charge! The earbuds can play 6 hours of music, and the charging case can power 24 more hours! Bass Mode: Easily switch between Back Bay's Signature Sound and our new Bass Mode