Take your music on the go with the gray SHARKK 2O Waterproof Bluetooth Wireless Speaker. This speaker is waterproof and dustproof with an IP67 ingress protection rating. Its dual 4W drivers reproduce sounds from 60Hz to 20kHz, and the battery lasts for up to 10 hours. Bluetooth 4.0 lets you wirelessly connect your compatible smartphone, tablet, or computer to stream music. Non-Bluetooth-enabled devices can connect via the included 3.5mm AUX port and cable, and you can even load up a microSD card with your favorite music and play it through the 2O's slot.