Features OELD Holographic Display This swim goggles have an OELD holographic display and AR diffractive optical waveguide which show real-time user data in your line of vision, making it easy to catch swimming time, pace, distance, and laps. Battery lasts up to 4 hours of swim time on a single charge. Thoughtful Design AR swimming goggles feature industry-leading anti-fog and anti-scratch technology, Ipx8-rated waterproofing, and a blue light-blocking layer. 3D silicone eye seals provide a perfect fit and leak-free swimming experience. Ergonomically designed to keep you comfortable while swimming. The goggles also have caller alerts to prevent you from missing emergencies while swimming. Data Analysis Our AR Swimming Goggles analyze your data through an easy-to-use APP that performs in-depth data analysis to help you monitor progress, measure metrics, and set goals to make swimming easier and more scientific. After your swim, open the companion iOS/Android app and you can review and analyze your performance in detail on your smartphone. What's Included All that you need, we've got it covered! 1 x AR swim goggles, 1 x custom size nose bridge, 1 x carrying case, 1 x quick magnetic charging cable.