I often regretted when I was running and that my earbuds were not sitting properly. Moreover, the cable was always in the way. So I wanted new earphones that remained and were wireless. Moreover, they should not be too expensive. Running is not an expensive sport. And it doesn't have to be. As an additional requirement, but I was somewhat optional in that they had to have a good sound and be waterproof. After reading several reviews that I was not much wiser about (often opposing opinions, they are good in some, in others they are not. With a bad connection, with the other perfect) I came across these ears. An unknown new brand, so a gamble. But good specs and moreover (at that time) a perfect score (5.0 based on 8 reviews). I have taken the chance and for the time being it will work out fine. The ears are fine, have a fairly good sound (on ear is better than in ear) and are in a super handy little box that serves as a charger. Operation is very simple and well thought out. Volume control is done on the phone, the rest via the earphones themselves. I walked for half an hour and that went fine. The ears stay in place and sound is transmitted well. Don't put the phone too loudly, otherwise you will no longer hear your surroundings. Not handy if you walk outside on the road.