Noise Machine Reduce/decrease/cut Down, Neighbor Upstairs Noise Deadener/Sound Eliminator/Silencer/Muffler NOISE Strike Back ,Durable Design

Automatic induction vibration + tapping When the noise upstairs exceeds 50 decibels, it can automatically counterattack. It can also be beat or vibrated separately, or it can work at the same time, And 9 levels of strength are adjustable, timing switch machine No noise at home, noise reminder