4-in-1 Karaoke Microphone Portable handheld wireless microphones can be used as a microphone, Bluetooth speaker, loudspeaker, recorder. Mini home KTV for playing music and singing anytime. Quality Sound & High Compatibility Professional audio processor and tuning system, three layers of high-density noise reduction, creates a fantastic KTV live sound environment and wonderful echo reverberation. Two-way Connection 3.5mm audio jack and Bluetooth connection, the wireless karaoke microphones can connect with all Bluetooth devices including Android iOS smartphones, PC, laptops, and apps like YOUTUBE etc. Bluetooth connection has a large 10m distance without obstacles. Long Play Time Built-in 2400mAh rechargeable Li-ion battery, this wireless Bluetooth karaoke microphone can last for more than 5-6 hours after a full charge. Amazing Gifts A unique gift for children and adults and an ideal present for Christmas, parties, and celebrations. Specifications: Output Power: 5W Product Weight: 385G Power Source: MA Polymer Battery Capacity: 2400mAh Charging Voltage: DC 5V/1A Frequency Range: 100hz-10khz Reverb Mode: Echo feeling TF Card: 32GB MAX (not included) Maximum Sound Pressure: >115dB 1KHz Thd