Zungle Panther is Sunglasses with built-in bone conduction speakers and mic. With Panther, you can listen to music and make phone calls. You won’t need any additional earphones or headphones. Zungle Panther’s Bone Conduction speaker transmits sound waves to the skull via vibrations. This technique lets you hear external sound when listening to music, and therefore much safer than earphones or headphones which completely block out sound from outside.