Whether you're hiking, paddle-boarding, or entertaining friends at home, the Bose SoundLink Flex Portable Bluetooth Speaker is designed tough to go where you go and deliver concert-level sound. With a sophisticated design that blends durability, portability, and utility, the portable speaker is waterproof and dustproof to withstand the outdoors and can be hung from a chair or secured to a backpack with the rugged utility loop. Whether it's upright or sideways, this indoor/outdoor speaker is designed to play the same natural, lifelike sound from any position. The fast and convenient USB-C charging gives you up to 12 hours of unplugged play time with this rechargeable Bluetooth speaker. Plus, you can use the built-in microphone on this outdoor wireless speaker to make phone calls or access your phone's native smart assistant to request songs and make commands while you're on your adventures. With Bose SimpleSync technology, pair your SoundLink Flex with another Bose Bluetooth speaker for louder, even more immersive sound. You can also pair your speaker with select Bose smart soundbars. Connect at the press of a button.