Here is a smart mask that plays your music and protects you from bacteria, dust, and fine particles (PM 2.5). The Vivzone Bone Conduction Audio Mask keeps your ears open as you enjoy your music. It has a unidirectional respirator and adjustable S buckle.
You can use this mask to take/ receive calls and get directions when you are exercising outside. It lasts up to 7 hours on battery. More info is available here.