Boulder+ - 100% waterproof and dustproof. Meets IP67 international waterproof and dustproof standards. Drop the EcoBoulder in your pool, lake or ocean, no worries – it floats. 100-watts dynamic power amplifier for massive sound. 3-way speaker system with 8″ full range + 8″ rear woofer + 3″ tweeter. Bluetooth 4.1 streams audio wirelessly from up to 100 feet away via your Smartphone, tablet or any Bluetooth enabled device. *GRY