More than just a mask, this Bone Conduction Audio Mask packs protection, leisure, and comfort. It features an ultra-fine filter that's highly resistant to dust, bacteria, and other suspended particles. It's also equipped with Bluetooth 4.0 technology that lets you listen to music, pick up calls, and listen to real-time navigation while you're doing sports. Perfect for jogging, hiking, biking, and more! For your comfort, this mask features a Bone Conduction speaker to free your ears and lessen direct harm to your eardrums. It also lets you enjoy your music while still being able to receive sounds from your surroundings.