Give your adventure a suitable soundtrack with the ECOXGEAR EcoBoulder Ultra Waterproof Bluetooth Speaker! Take your jam to the pool, ocean, lake, or river thanks to its waterproof, submersible, and buoyant design. Make it a party by turning on the RGB LED lighting and customizing the colors, speed, brightness, music sync, and LED chasing. A built-in equalizer and 5 digitally DSP modes lets you fine-tune your audio output. EcoCast and LEDCast capabilities allow you to wirelessly connect with up to 100 EcoCast-enabled ECOXGEAR and SoundExtreme speakers (not included). Included rechargeable battery powers the speaker for up to 50 hours (at average volume). Also comes with an AC power cord and user guide. Waterproof, submersible, and buoyant RGB LED lighting with customizable colors, speed, brightness, music sync, and LED chasing Built-in equalizer with 5 digitally DSP modes EcoCast and LEDCast wireless capabilities Rechargeable battery lasts for up to 50 hours Includes AC power cord and user guide