Power through a day on the job with clear, powerful sound from the STACK PACK™ Radio and its dual full-range speakers and a 5-1/4-inch subwoofer. Listen via its AM/FM radio or stream audio wirelessly up to 150 feet away via Bluetooth™, which also allows up to two radios to be paired for an even more immersive sound experience. Its IP64-rated protection withstands wet and dusty jobsite conditions. Power the radio via its AC cord or go fully wireless with any FLEX 24V battery. The radio also features pass-through charging, so you can power the radio via its AC cord and charge your FLEX 24V battery simultaneously. USB-A and USB-C ports allow you to power or charge additional devices like phones and laptops. The STACK PACK™ Radio is compatible with select STACK PACK™ tool boxes and organizers via its quick-connect latches for easy transportation, organization, and jobsite listening. All this, powered by the same FLEX Advantage as FLEX power tools—providing unmatched battery power, runtime, and fast charging speed (battery sold separately). It's protected by the FLEX Limited Lifetime Warranty when registered within 30 days of purchase at registermyFLEX.com through December 31, 2025.