This is one of those happy purchases when what you hold in your hands is not different from the advertising that made your jaw drop. Rarely a product deserves 5 stars. But in the case of Soundbrenner Core i would say 5 stars are not enough! Its clever functionalities, its sleek design, its high-quality finishes and sturdiness makes it not only a reliable device for music matters but also an object you love to wear all the time. It's been almost a month since I've got my Core and I tested it all throughout in this time frame... Nothing to complain about this marvellous piece of technology: everything works perfectly, the syncing with the Soundbrenner app (on my iPhone) is flawless, the vibes are strong, the tuner is accurate, the magnet-grip is awesome. Kudos to the Soundbrenner developers and also to their great support team. Thank you for the creativity, efforts and love you put in designing and producing this adorable watch. A great companion for every musician.