Drum cavity patent

The electric drum skin of starfish king is all over the net, and the impact is similar to that of a real drum. Especially the patented non-contact induction technology, the trigger is in the drum cavity and does not touch the hitting surface, so the hitting sound is even and there is no sonic boom point (solving many common problems of electric drums). I learned electric drums the year before last, but I don't know how to buy another drum. It's tragic, so I won't mention it. Your teacher suggested that you buy it. After all, there must be a reason why you went there to study.