Bluetooth Beanie Hat Cap Headphone Stereo Speakers & Mic ,Hands-Free Ears-Free Headset in a Hat Black Hands-Free Bluetooth Connectivity Ears-Free Bone Conduction Audio. No Earphones required! Sound is transmitted directly to the inner ear through vibration Crystal clear microphone located inside the bill Compatible with all smartphones 5 hours talk time,easily re-charged by USB (cable Included)