Blue Ear Bluetooth Baseball Cap Wireless Summer Hats Headphones Headset Men And Women Fasion Caps with Stereo Earphone Speakers Up to 8 Hours Music Steaming Back & Hands Free Phone Talking V4.1+EDR Bluetooth version, available for most bluetooth device like IPhone, Ipad, Samsung, Sony, Blackberry, HTC etc. Voice reminding you Power On, Connected and Power off, no need to take off the cap for operation. 100 % Nylon Taslan material, fashion and sunshine proof with answering phone in all seasons. Washable and detachable. The magic Bluetooth cap is your best choice when doing outdoor sports like walking, jogging, cycling, touring, fishing, etc