Review on R13 Multifunctional Rechargeable Electrical Device by Ricardo Mercado

Works but the supplied KN95 masks with pre-cut air tube holes made my ears stick out on the sides and were uncomfortable and also interfered with my goggles. I used a piece of plastic and some wire to attach the mask to the headband, but this required frequent adjustments and 10 minutes of turning to get it to fit. I've found and bought several KN95 masks that use headbands instead of ear loops and ordered a 10mm round punch. It would be great if someone suggested this along with the machine.