An unusual-looking Speaker Backpack with built-in speakers and a rechargeable battery appeared on the Kickstarter crowdfunding platform. According to the assurances of the developers from Stealth Labs, Speaker Backpack differs from similar backpacks in high quality, waterproof and more functionality. A backpack made of waterproof nylon fabric weighs only 2.2 kg and is equipped with two Hi-Fi Bluetooth speakers. The built-in battery with a capacity of 5,000 mAh provides from 5 to 6 hours of battery life. Speaker Backpack has additional polymer protection. The backpack has a cable for charging a smartphone with USB Type-C and Lightning connectors. Thus, charging is available for both iPhone and Android smartphones. The volume of the backpack is 12 liters, which allows you to place a laptop, a bottle of water, a sweater and other necessary things inside it. The cost of the product on Kickstarter is $ 119.