Misun Pulse Portable Bluetooth Speaker Super Bass Wireless Mini Speakers Sound Box Built-in Flash LED Light & Mic TF AUX USB Disck 1. Unrivaled sound with two high-performance drivers and a built-in bass port for clear, room-filling sound. 2. Built-in audio and visual experience with programmable LED lights that pulse to your music - wherever you want it to be and Bluetooth connectivity with NFC feature let you enjoy content from a variety of media players. 3. Pre-programmed and custom-programmed light themes controlling brightness and color, pulsed to your music. 4. Rechargeable Li-ion battery for 10 hours of wireless fun. 5. Simplified set-up, easy connection and complete control with the app.