About this item: 
SMALLEST WIRELESS SPEAKER, BIG SOUND - Featuring (1) 1" double dome tweeter, (1) 4" glass-fiber midrange driver and a 100W Class D amplifier, the B&W Formation Flex Wireless Speaker delivers bold, room-filling sound for your movies, music, TV, and games 
SYNCHRONIZED MULTI-ROOM STREAMING - Play the same song in every room, or play different songs from different sources in each room with the iOS/Android compatible B&W Music App; The speaker allows state-of-the-art music streaming at 24-bit/96kHz resolution 
WIRELESS AUDIO PLAYBACK - With built-in Bluetooth 4.1, AirPlay 2 & Wi-Fi, stream music directly from your mobile or computer using popular services like Tidal, Tune In, Qobuz, & Spotify Connect, if you have a subscription; The speaker is also Roon-ready 
VOICE CONTROL WITH ALEXA - The Formation series supports voice-control via an Alexa-enabled device (sold separately) with simple voice commands; Get access to additional wireless streaming services like Pandora, SiriusXM, iHeartradio, Tune In, and more 
MULTIPLE USAGE OPTIONS - Use it as a single mono speaker, add a second Flex to create a high-performance stereo pair, or use as rear surround speakers with Formation Bar and Formation Bass Sub (all sold separately) to create a 5.1 surround sound system 
RENEW YOUR EXISTING SYSTEM - No need to make any big changes; Convert your current passive system or components to a completely wireless streaming ecosystem, anywhere in your home by adding the Formation Audio Network Streamer (sold separately) 
CREATE A COMPLETE HOME THEATER SETUP - Add the B&W Formation Bass wireless powered subwoofer, the Formation Bar sound bar, and two Formation Flex speakers as rear surrounds to build a high-performance wireless surround sound system; (All sold separately)