For this price, this headset has a good sound, especially for a Bluetooth headset. Its small size and finesse scared me, but finally the sound is rather impressive for its size. Its foldable side brings advantages and disadvantages: + Foldable therefore necessarily convenient for portability and storage + Lights and switches off when it unfolds and folds it, and of course it connects automatically to your smartphone / tablet / PC - It is foldable and very fine, but suddenly also very fragile. I also fear that the headset falls out of my head, but eventually it exerts a light pressure making it fits comfortably on the head without hurting the ears (this happened to me with other wired headsets). It is also very light. Besides, it is also adjustable to the waist to fit your head. In short, quite a good Bluetooth headset at this price.