Bluetooth Connectivity For Wireless Music Streaming: The Emerson Ers-1001 features Bluetooth technology, allowing you to stream music wirelessly from your smartphone, tablet, or any Bluetooth-enabled device with ease.waterproof And Weather-resistant Design: Built for the outdoors, this rock speaker is fully waterproof and weather-resistant, making it perfect for backyard parties, patios, pool areas, and gardens, no matter the weather.solar Charging For Easy Charging: Equipped with solar panels, the Ers-1001 allows for easy charging, so you can enjoy endless music outdoors without worrying about battery life or power cords.built-in Rechargeable Battery For Portability: The built-in rechargeable battery ensures hours of uninterrupted playback, giving you the freedom to place the speaker wherever you want, without the need for constant recharging.