... sing!* It can vibrate on any hard plane surface like floor, table, wall, window, desk, wooden, metal, and ... plane surface sing.(A wooden desk is the best great surface for the vibration speaker.)* It sounds ... it on different surface* This new product makes your surrounding the most popular entertainment and the magic ... send by ups,dhl...is ok,all depend on your chioce.3: 100% of all delivered products ...