COMPLETE SYSTEM: Ready to use multimedia portable karaoke system has everything you need! Includes wired & wireless microphones! BLUETOOTH FEATURE: Bluetooth connectivity for a more versatile experience, you can connect with most Bluetooth devices to stream wireless. HIGH CLARITY: This personal amplifier karaoke system delivers a total of 40 watts! Perfect for when you are in a large group of people, it is very loud and clear! PORTABLE DESIGN: The built-in 2000 mAh rechargeable battery is designed to last up to 5 hours! It is housed in a high-density drop-resistant designed box. MEDIA INPUTS: There are additional ports to access your media using the USB thumb drive and an SD card slot. You can also use the audio cable that is included to connect to any 3.5 mm device..