As the title suggests, I have used the device for about 3 months - about 5 days a week for about 2 hours at medium volume and suddenly makes it "Klik" and the unit is gone. It is not fallen down - no water damage, no extreme temperature - suddenly while walking, zag away with the beautiful music. Of course, that does not mean that all the devices are so, but I for one am very disappointed and never buy it again. Option not from the beginning - In addition, the repetitive work. But there are also good sides - the sound gets me 4 stars - the Handbarkeit, height, weight also get 4 stars - the storage capacity for the price is also reasonable 3 star. But finally I am disappointed that it is no longer just 3 months, in spite of good treatment to use. I hope the review can help you something!