The GGMM E5 is a smart wireless speaker with Alexa Voice Service. Users can simply talk to the product to play music, answer questions, get news and local information, and control smart home products and more. Slim body with adjustable leather handle strap. Three connection modes: bluetooth / WiFi / AUX-in. Exclusive app provides plenty of cloud music and allows for streaming music without smartphone control and for customization of your favorite channels. Adjust bass and treble to enjoy hi-fi music. Supports multi-room and left / right channel play. Charging for devises with USB interface. Hands-free phone calling over bluetooth. 15 hours of continuous use.