Treat your ears to something special with the MA770 Wireless Kevlar Speaker by Master & Dynamic. Though wireless and portable, this innovative speaker features incredible materials. The 4-inch woofer is actually made with Kevlar while the tweeter is a 1.5-inch titanium dome. In addition, the exterior features a grey concrete composite for exceptional style. In addition, you can connect your device using Wi-Fi or Bluetooth as well as the 3.5mm audio port. The MA770 Speaker also features built-in Chromecast for accessing all of your favorites including Tidal, Pandora, Soundcloud, Deezer, Spotify, and more. The MA770 Speaker delivers effortlessly smooth and dynamic audio with an exterior to match. Coming in grey, it will instantly fit in with your existing décor.