State-of-the-art design – SoundLink Flex outdoor speaker is packed with exclusive technologies and a custom-engineered transducer for deep, clear, and immersive audio at home or on the goClearest possible sound – Proprietary Position Qtechnology automatically detects the position of your portable Bluetooth speaker for optimal sound quality in any orientation or environmentWaterproof wireless speaker for travel – SoundLink Flex is rigorously tested to meet IP67 waterproof speaker standards. Crafted and sealed with waterproof materials, it even floats – ideal for outdoor adventuresPortable Bluetooth speaker – Built to resist water, dust, and debris, in a design that withstands drops and rust, this compact speaker goes wherever you do. It’s also easy to hold and store, and resistant to corrosion and UV lightRechargeable wireless speaker battery – Portable speaker charges through USB-C cable (included). Lithium-ion battery offers up to 12 hours of life per chargeBuilt-in microphone – You can make and receive calls through the portable Bluetooth speaker. Just one button accesses your phone's Siri or Google Assistant voice inputBluetooth wireless speaker – SoundLink Flex pairs with Bluetooth-enabled devices like phones and additional Bose speakers within a range of 30 feetBose Connect app – App automatically updates the portable Bluetooth speaker with the latest software, allows you to customize settings, unlock product features, and more