Turn your summer barbeque into a party with some powerful outdoor speakers like the Big Turtle Shell Ultra. The latest iteration of Outdoor Tech’s Turtle Shell line, the Big Turtle Shell Ultra is the brand’s loudest speaker yet. Plus, the speaker daisy-chain connects to other speakers via Bluetooth, with a range of up to 30 feet. The speakers are waterproof, serve as power banks and lanterns, and have built-in mics so you can receive and make calls. Back the Big Turtle Shell Ultra now on Kickstarter, with one speaker for $107.