DESIGNED FOR THE OUTDOORS – IP67 waterproof and dustproof rated protection whether it's raining, snowing or you are in the middle of a dust storm. Drop it in a pool, lake or ocean, no worries - it floats; This speaker is built tough and shock proof to handle all the elements MASSIVE SOUND - a dynamic 100-watt Texas Instruments power amplifier drives a 6 x 9-inch full range main driver, with a 1.7-inch tweeter for up to 121 decibels of balanced, quality acoustics that is loud enough for the outdoors which you won't find on ordinary portable speakers ECODSP BUILT-IN - integrated high performance 24-bit DSP with audio enhancing engine provides 3 equalizer settings for either maximum bass, a warmer profile for inside, or a high frequency profile to max out the decibel level so you can play it loud; Also includes a dedicated external microphone DSP with 3 EcoEQ settings to optimize your voice for the perfect portable PA or to sing along with music (mic sold separately) ECOCAST ST BUILT-IN - wirelessly connect with up to 100 EcoCast enabled speakers, soundbars, towers speakers and radios to create a massive true left and right stereo or mono (party mode) system for the ultimate party (EcoCast is not compatible with the previous generation EcoConnect technology) BATTERY LASTS FOR DAYS - play continuously on standard AC plug-in power, or built-in battery for 25+ hours at average listening levels (6+ hours at full volume) MULTI-AUDIO SOURCE INPUTS AND OUTPUTS - connect to your phone from up to 100 feet away with built-in Bluetooth 5.1; switch playback between two connected phones without having to disconnect a phone; use the built-in speakerphone to conduct calls or connect to your favorite voice assistant; External microphone jack with dedicated volume control for PA or campfire sing along (mic sold separately)