The 5" rock speaker is designed for outdoor use, offering high-quality wireless sound. These gray lava-colored speakers blend well with the natural surroundings of your yard or garden and have a weatherproof rating of IPX5. They are resistant to water splashes and project big, clear sound perfect for open-air environments. The solar panel on top keeps the speakers charged when set in sunlight, and a Usb charging cable is included. The speakers can stream music wirelessly from any Bluetooth-enabled device, and they use Tws (True Wireless Stereo) pairing for easy pairing. The iHRK-500S-pr is equipped with a 2000mAh rechargeable lithium-ion battery, which can be charged via the included microUSB cable. The speakers are weatherproof, with a Uv protective cabinet, and can be left outdoors without fear of damage. The speakers feature a compact package, with a large sound output from their 5" drivers, making them ideal for outdoor settings.