The BOSE ULTRA OPEN EARBUDS offer a comfortable fit with their open-ear design and come with a charging case and carabiner. - Brand: BOSE - Model Name: ULTRA OPEN EARBUDS - Color: White - Accessories: Charging case, carabiner - Design: Open-ear type Retail Price: Earphones 29,800 yen Case 7,150 yen Thank you for viewing. I purchased and used these at the end of December last year. I haven't used them very often, about 1-2 times a month on average. Once, they fell out of my ear at a track and field stadium, and a little bit of the tartan color got on them (see photo 3). Other than that, I don't feel any damage or battery degradation. A wireless charging case is also included.