[Apple Airplay Certified]GGMM M4 Wireless Speaker for Music Streaming,Wi-Fi Bluetooth Indoor Outdoor Speaker, Built-in Battery,10-Hour Playtime,Powerful 40W Audio Driver,Enhanced Bass,Multi Room Play Kevlar speakers with integrated Wolfson DAC minimizes sound distortion Multi-room audio: Connect up to 6 speakers. Each speaker can stream Left & Right channels to create a surround sound experience Make music social: Switch easily between audio sources and add up to 16 devices without logging out Built-in rechargeable battery allows you to enjoy your music anywhere (10 hours) Connect via Bluetooth, direct Wi-Fi, Wi-Fi router, or AUX