Custom-designed woofer with Aramid-Fiber Cone - Aramid fiber is employed in z3's dual 4-inch woofers. Aramid Fiber offers improved damping characteristics over conventional paper or plastic drivers. Ios and Android app - doing away with a traditional remote control, a free smartphone/ tablet application is available for download to simplify setup and allow for fi designed-tuning of discovery Z3. Discovery Ecosystem - the discovery Z3 can be used as a stand-alone system or as a part of your whole-home discovery Ecosystem. 50 watts for each bass driver - 20 watts for each tweeter - 140 watts total power Wireless connectivity via Wi-Fi or Bluetooth. Includes a 3.5mm input. Streaming technologies: discovery, Spotify connect, Bluetooth, airplay, Roon