The Reebok Nitrous Smart Audio Sunglasses Powered by Lucyd with classic black polarized lenses deliver essential performance for versatile active lifestyles. These Bluetooth sport glasses combine timeless athletic eyewear with premium HiFi open-ear audio technology that outperforms typical audio glasses. Perfect for cross-training, gym-to-outdoor workouts, running, cycling, and recreational sports. The Base 6 frame design is compatible with vision care customization through your local optical provider. Enjoy your motivational playlists without losing awareness of your surroundings, take calls with exceptional clarity, and transition seamlessly between different activity environments.