Mr.Power Foldable Glockenspiel Xylophone Vibraphone Percussion Instrument 30NOTES 30 Notes, each note is marked on the appropriate bar. The note range is G5 - C8 Length 22.8inchExpand width(up-12.6inch,dwon-5.5inch),Close width(up-7inch,down-3inch) Aluminum bar, wooden body The sound is surprisingly crisp and rich, good sustain (If feel excessive sustain and dont need it, just tighten the screw on the bar a little to you need.)