Bibtone MULTI Q : Smartphone Holder for Guitar Black All Guitar Q series suits for IPhone, Samsung Galaxy and etc.,. (You can use any device ranged from 57mm to 80mm) A 360 degree revolution. You can control your view point at any angle. How to use Guitar Q? Check the video now, listen beautiful song. http://www.youtube.com/watch?v=Kc5ksuPHov8 Visit our website for more information http://www.bibtone.com/