Zoook has changed the game again with the new Rocker Mean Machine Mini. Rocker M3 brings together style, creativity and function. This portable sound cylinder is perfect for those summertime beach days. With the built-in Bluetooth capability, aux-in, USB and micro-SD inputs, you can enjoy music anyway want. Don't worry about a power outlet. The built-in rechargeable lithium battery allows you to listen to music for hours. Zoook Rocker Mean Machine Mini M3 speaker with Bluetooth connectivity that also has the ability to connect to any external device via a 3.5mm aux input jack, TF card, USB flash and a side panel for button control center. This boom box speaker is portable and wireless and lightweight to carry, with a wireless Hi-Fi active stereo system and a full-range stereo for sound production. With this Bluetooth surround speaker, you can connect any of your preferred electronic devices via Bluetooth - an Android device or an Apple product, laptop or PC. With a built-in rechargeable battery, you can play hours of music on this surround speaker with Bluetooth connectivity, USB flash drive reader and is compatible with MP3 digital audio file. This portable boom box Bluetooth speaker is a high-powered tube boom box with an active stereo speaker system, digital sound amplifier and a full range stereo for perfect sound. It's predecessor has already gained a lot of appreciation (Zoook Rocker Mean Machine M2). Built-in huge 1500mAh rechargeable Lithium battery. 8-watt speakers.