Works with Alexa for voice control (Alexa device sold separately) ; Audio Formats :AAC, Apple Lossless, MP3, WMAThe most powerful wireless speaker from Bose. Waveguide technology provides enough power to fill the largest rooms in your home with deep, rich soundWorks with your Wi-Fi and Bluetooth devices to play music services like Amazon Music, Spotify Internet radio stations and your stored music libraryRemote:4.5 H x 1.75 W x 0.5 D inches. Features six presets for your favorite playlists, stations and podcasts, and an OLED display for time, song, station information and morePart of an entire family of multi-room wireless speakers designed to grow with you. Wireless network compatibility: 802.11 b/g/nAsk away. With the new Bose Skill for Alexa you can now enjoy hands-free voice control of your SoundTouch speakers using any Alexa-enabled device - like the Echo DotDimensions : System:9.7