Wireless Connectivity: Wi-Fi &Bluetooth 4.2 Wi-Fi Streaming via Airplay/DLNA in high quality within a wifi range of up to 160 feet. Bluetooth 4.2: simply press a button to switch among the different play modes. Note Only connects to the network (2.4GHz). Wi-Fi repeater function (WPA2 security): it is recommended to change the original password via the app. Integrated Alexa Voice Service Just tap the speaker to ask Alexa a question, Such as "What's the weather today?" More intergrated online Streaming Service in the GGMM E-Series APP there are certified online Streaming Service such as Spotify, Tidal, Napster, TuneIn, iHeartRadio; Play music from the cloud independently on the E2 and free your cellphone. Multi Room Play & L/R/Stereo Channel: At least 2 Speakers (max 16) can be played in several rooms with the same / different music controlled via the GGMM E-Series App. Speakers can be set up in separate L/ R channels to create a surround sound Connect up to 16 speakers. Multiroom function or separate L/R channels setup are ONLY compatible with GGMM E-series speakers Great Sound Quality 10W power offers rich, clear and powerful surrounding sound Stream Your Favorite Music: Saving 6 favorite channels by the GGMM E-Series app (free in App Store and Google Play) or pressing the favorite button on the speaker. Simply pressing the button to change the channels or via the APP Updating GGMM E2 supports online update. We will keep updating the E2 with features, service and skills. Always getting smarter and better. Compact and convenient With its compact design and built-in 2200mAh lithium battery, GGMM E2 fits indoors and outdoors for 14 hours of playtime. Hands-free Call in Bluetooth mode