VicTsing Vtin 5W Bluetooth Shower Speaker, Mini Portable Waterproof Speakers, 7 Hours Playtime for Android iPhone or Other Bluetooth Device 2016 Outdoor Use Speaker.Made of solid ABS, aluminum mesh and silicon material, the speaker is great for outdoor activities, crash proof,IPX4 water resistant, and dustproof. The included strap is designed for portable carry. High Stereo Sound. 5w audio driver with vibrating diaphragm delivers crisp, clear sound and satisfying bass. Long Working Time. Built-in 800mah polymer lithium battery.