Sonitrek Sling Smart Bluetooth 5 Portable Wireless Waterproof Speaker - Free ShippingFeaturing a minimalist waterproof design, powerful Bluetooth 5 chipset, and next generation omnidirectional sound drivers, Sonitrek goes where other speakers can't. Three convenient, all weather sizes allow you to pick the best fit for your lifestyle. The best waterproof Bluetooth speaker, made for the road The Sonitrek Sling goes wherever your trek takes you. Fully waterproof with an ultra durable sealed design and included wear resistant lanyard.