Certified Refurbished product has been tested and certified by the manufacturer or by a third-party refurbisher to look and work like new, with limited to no signs of wear. The refurbishing process includes functionality testing, inspection, reconditioning and repackaging. The product ships with relevant accessories, a 90-day warranty, and may arrive in a generic white or brown box. Accessories may be generic and not directly from the manufacturer. SURPRISINGLY SERIOUS SOUND - Don't let the small package fool you, each UE WONDERBOOM delivers massive, crisp, clear 360-degree sound so you can liven up the party. BLUETOOTH CONNECTIVITY - Connect to your UE WONDERBOOM using Bluetooth and keep on playing up to 100 feet (30M) away

Rugged Sport model is snow proof, sand proof, and waterproof to 3 feet for 30 minutes Built-in microphone for full-duplex speakerphone, Siri, and Google Now capability Six drivers on four sides for a 360-degree sweet spot and incredible 95dB SPL-A volume