Have you ever wondered what it would be like to hold the power of an amplifier in your hand? The Big Turtle Shell gives you the chance to experience this power. The Big Turtle Shell cranks out an amazing 110 decibels of loud and clear sound. Hug rechargeable lithium-ion battery provides a built-in power bank that allows users to also charge external devices. Twin grab handles built into the base allows for easy transport and limitless hanging/strapping options. The Big Turtle Shell is IP65 certified, meaning its shockproof, dust and water resistant. Play Time: 16 hours, Two dual speakers and a large passive bass radiator, IP65 certified dust and water resistant, Built-in microphone, 3.5mm audio-in port, 3.5mm audio out for linking multiple Big Turtle Shells, Connects to any Bluetooth-enabled device with easy one-touch pairing, Model Year: 2018, Product ID: 376421, Model Number: OT4200-B, GTIN: 0818389010790