GGMM E2 is an amazing stereo mini smart speaker with Alexa Voice Service. Users can use voice control to play music, answer questions, get news and local information, control smart home products, and more. The two driver speakers deliver stereo immersive sound. It features a choice of two connection modes: Bluetooth or Wi-Fi. The exclusive app provides access to plenty of great music, either through streaming or the Cloud. It also supports multi-room and left/right channel play. The built-in rechargeable lithium battery lasts up to 14 hours.