Sealed. The JBL Flip 6 Portable Bluetooth Wireless Speaker in Blue offers a frequency range of 63 - 20000 MHz and a power source of battery with a battery life of 12 hours. It features an equaliser, LED indicator, and Bluetooth connectivity for wireless audio streaming. The compact and portable design makes it easy to carry around, and the built-in battery ensures on-the-go music enjoyment. With a powerful 20-watt audio output and a single speaker system, this JBL Flip model is a great choice for anyone looking for a versatile and high-quality speaker for their sound and vision setup.