... FM radioSupporting USB for music ( mp3 format ) ( USB 2.0/1.1 )With USB recharge connectorPower supply: rechargeable with high ... guide, teachers, conference, outdoor lecture, parade, assembly etc. This mini portable speaker is widely used for Yoga, Gymnastics , office , school , ... feel free to tell me if you like more function, I will recommend you as your request . Multi-function digital microphone