NAUTICAL ACTIVE NOISE CANCELING BLUETOOTH STEREO HEADPHONES H400 Thank you for purchasing an original Nautical NTHPOZ2 Active Nose Canceling Bluetooth Stave Headphones HA. You are getting a high quality product that's built to combine technology and design for your everyday use. Please read the below info carefully to get the most out of your new product. For more detailed info on care, use and warranty, please visit biotechnological.