Meet the Bose SoundLink Revolve+: a portable Bluetooth speaker from Bose that provides you with 360-degree coverage, up to 16 hours of battery life, and Siri/Google Now support. Its flexible handle lets you carry the speaker around conveniently. The body is made of aluminum and water resistant. You can pair two speakers for party / stereo mode.
SoundLink Revolve+ has an app that lets you switch between Bluetooth devices easily. It is available in 2 colors. You can get it for $299.