Portable PA System Stereo Speaker with AM/FM Radio / Extend Antenna / Microphone / AUX in / USB Disk / TF Card / Mp3 player (Blue) Portable PA system speaker is made by ABS materials, sturdy and durable, strong vibation resistance; can clip on to waist, belt or shoulder Powerful speaker includes 1200 mAh large capacity rechargeable battery, LED digital display screen, which can show song and radio frequencies, comfortable to use everywhere Mini portable speaker can support MP3 format music in USB/Micro-SD card, and deliver high-quality sound, good choice for people to listen to music Stereo Speaker with AM/FM radio, extend antenna, microphone, perfect for you to search and save radio automatically The frequency response of this portable speaker is 180Hz-15kHz, microphone sensitivity is -53dB, and the charging time is around 3-5 hours