A waterproof augmented reality goggle system (10; 200; 300; 704, 706; 860), comprising: swimming goggles , comprising: a left-eye covering and a right-eye covering , the left-eye covering and the right-eye covering each having a corresponding transparent window (38, 34; 316) defining a field of view, and the left-eye covering and the right-eye covering each having a seal extending from the corresponding transparent window (38, 34; 316) operable to seal against a wearer's face and to exclude water; a nose piece (30; 310) located between the left-eye covering and the right-eye covering ; a flexible strap (12; 320) comprising temple regions extending from each of the left-eye covering and the right-eye covering ; an augmented reality system (50; 330; 706) comprising a rigid frame ; a gasket configured to provide a water-tight seal between the rigid frame and one of the transparent windows (38, 34; 316), forming a water-tight sealed volume ; wherein the augmented reality system (50; 330; 706) further includes a frame nose connection configured to secure the rigid frame to the nose piece , and a frame connection configured to secure the rigid frame to one of the temple regions of the flexible strap (12; 320), and wherein the rigid frame is selectively attachable to and detachable from the nose piece (30; 310) and the one of the temple regions via the frame nose connection and frame connection respectively, such that the AR system (50; 330; 706) is attachable to and detachable from one of the transparent windows (38, 34; 316) of the swimming goggles. swimming goggles , comprising: a left-eye covering and a right-eye covering , the left-eye covering and the right-eye covering each having a corresponding transparent window (38, 34; 316) defining a field of view, and the left-eye covering and the right-eye covering each having a seal extending from the corresponding transparent window (38, 34; 316) operable to seal against a wearer's face and to exclude water; a nose piece (30; 310) located between the left-eye covering and the right-eye covering ; a flexible strap (12; 320) comprising temple regions extending from each of the left-eye covering and the right-eye covering ; a left-eye covering and a right-eye covering , the left-eye covering and the right-eye covering each having a corresponding transparent window (38, 34; 316) defining a field of view, and the left-eye covering and the right-eye covering each having a seal extending from the corresponding transparent window (38, 34; 316) operable to seal against a wearer's face and to exclude water; a nose piece (30; 310) located between the left-eye covering and the right-eye covering ; a flexible strap (12; 320) comprising temple regions extending from each of the left-eye covering and the right-eye covering ; an augmented reality system (50; 330; 706) comprising a rigid frame ; a gasket configured to provide a water-tight seal between the rigid frame and one of the transparent windows (38, 34; 316), forming a water-tight sealed volume ; wherein the augmented reality system (50; 330; 706) further includes a frame nose connection configured to secure the rigid frame to the nose piece , and a frame connection configured to secure the rigid frame to one of the temple regions of the flexible strap (12; 320), and wherein the rigid frame is selectively attachable to and detachable from the nose piece (30; 310) and the one of the temple regions via the frame nose connection and frame connection respectively, such that the AR system (50; 330; 706) is attachable to and detachable from one of the transparent windows (38, 34; 316) of the swimming goggles. <EOS>