Features Bluetooth 5.0 - The latest wireless technology gives instant pairing, lower latency, strong connection, and greater range.recording Function - The wireless microphone system can record your singing inside the Sd or Usb drive(not included) to play later on the device of your liking.volume Control - Mic and karaoke speakers' output can be raised or lowered according to your likings using the volume control button.Great Gifts For Kids - The karaoke mic is a fantastic gift to give to toddlers, kids of both girls and boys.Microphone Specifications:Color- BlueOperating voltage: 3.7VMaximum output power: 5WBattery: Non-removal RechargeableTF support format music format: MP3 Wavtf card maximum capacity: 32GB (Not included)Frequency range: 150Hz-20KHzSignal-to-noise ratio: =85dBMaximum sound pressure level: 115db 1kHz Thd one hundredthBluetooth transmission Distance- 50 Ft(depending on environment)Package Included:1x Bluetooth Karaoke Microphone