JBL JBLFLIP6REDAM-Z FLIP 6 Portable Speaker Waterproof Red - Certified Refurbished. By yourself or at a party, you can play big, bold sound all day with the red JBL Flip 6 Portable Waterproof Bluetooth Speaker. At only 7" long, you can easily toss the Flip 6 into your backpack or bag. It lasts for up to 12 hours on a charge, and the water/dustproof design lets you use it nearly everywhere, including at the pool or beach. Your favorite tunes are pumped out of a 2-way, 30W speaker system, where a racetrack-shaped woofer delivers rich lows and midrange, a tweeter produces crisp highs, and dual passive radiators round out playback with deep bass. Whatever you play is fine-tuned to sound great via a Harman algorithm..