App-Enabled Tint Changing Smart Sunglasses with Audio put you in control of your outdoor experience. Simply download the free smartphone app to change the tint of the lenses whenever you want, instantly. Dual Bluetooth speakers let you stream your favorite songs, playlists or podcasts right from your phone. Or, talk on the phone hands-free with the built-in microphone. Features classic Wayfarer style, LED charging indicators and IPX4 waterproof design. Operates up to 7 days on a full charge. App compatible with iPhone (iOS 12.0 or later) and Galaxy/Android (OS 5.0 or later)