The Bose SL-REVOLVE-BLK really will be the heart & soul of the party, the sound is projected in all directions with the Revolve Bluetooth speaker. 360 Degree Sound The Bose Revolve is designed for you to take wherever you go, but the size really doesn't reflect the incredible audio that the Revolve lets out. Thanks to the extremely efficient transducer which produces incredible sound across the full frequency range you really will be listening to your music the way it should be heard. Matched with the dual-passive radiators which handle the deep lows & give off a powerful base the, the Revolve really will get your party started. Bluetooth Connecting your smart device to the Revolve couldn't be easier & it also allows up to two devices to be connected at once. The Revolve will automatically remember the previous 8 devices that were connected for quick & effortless pairing. It also offers NFC connectivity with compatible devices, which means that you are able to connect with a simple one touch connection. Not only does it offer these easy pairing options but it also has an incredible battery life, its battery lasts up to 12 hours meaning that it will keep going all day without the need to recharge. Design Not only does the Revolve make listening to music easy & sound incredible, but it also looks the part too. It is IPX4 rated water-resistant meaning that you really can take it anywhere & not have to worry about it getting splashed or caught in the rain. Thanks to the soft bumpers top & bottom it offers a little bit of protection towards rough handling like chucking it in your bag. Phone Functions When your phone is connected to the Revolve it works as a speakerphone which means that you are able to take hands free calls whilst out driving or while your hands are otherwise preoccupied. Thanks to the high quality sound on the Bose Revolve the words are much clearer & less muffled meaning you won't miss any part of the conversation. The multi-function button even allows voice interaction directly with Siri & Google now.