Like anything, you need to use this consistently to see results and so far I am happy with the results I have witnessed. Unfortunately I was sent 599s but I cant complain since I basically got the 599s for the price of 569s. touch expert I cannot comment on how long a charge lasts as I haven’t used it long enough to find out. 2nd pair, buds would not find each other and paired separately to my device. touch expert Unfortunately, its wast of money. touch expert I love the different colors. This is just a cheap piece with sub standard material. Im able to change the level from 1-9. touch expert Calidad, diseño! I mainly bought it to listen to music.
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