Featuring bone conduction technology, C3 wireless earphones are perfect for exercise. - Model Name: C3 - Accessories: USB cable, instruction manual - Type: Bone conduction earphones - Uses: Running, walking, fitness Lightly used. You can get trendy bone conduction earphones at an affordable price. Thank you for looking. They don't block your ears, so they're comfortable, and you can hear surrounding sounds and voices, making them ideal for exercise, childcare, and more.