Works with Alexa for voice control (Alexa device sold separately), Remote - 4.5 H x 1.75 W x 0.5 D inchesProprietary acoustic design delivers big performance from a compact speaker—perfect for bedrooms and kitchensWorks with Wi-Fi and Bluetooth devices to play music services like Amazon Music, Spotify, Internet radio stations and your stored music library. Wireless network compatibility- 802.11 b/g/nFeatures six presets for your favorite podcasts, stations and playlists, and an OLED display for time, song, station information and more. Supported audio formats: MP3, WMA, AAC, FLAC, Apple LosslessPart of an entire family of multi-room wireless speakers designed to grow with youEnjoy hands-free voice access to music on your SoundTouch speaker with any Amazon Alexa-enabled device, like the Amazon Echo Dot