Karaoke Machine Multifunction Stereo Sound Portable Bluetooth Speaker with 2 Wireless Microphones for Home Party KTV White Item Type: Karaoke Machine Material: Plastic, Electronics Speaker Size: Approx. 8x7.2x6.5cm / 3.1x2.8x2.6in Microphone Size: Approx. 13.5x3x3cm / 5.3x1.2x1.2in Speaker Bluetooth Version: Bluetooth 5.3 Speaker Diameter: Approx. 57mm/2.24in Speaker Speaker Power: 6W Speaker Frequency Range: 20Hz-20KHz Speaker Reverb: Back Sound Effect Reverb Speaker Charging Time: 3.5-4 Hours Memory Card Slot: Speaker Memory Card Slot Supports up to 512G Storage (Not Included) Microphone Charging Time: About 2.5 Hours Battery Type: Built In 1200mAh for Speaker, 400mah Polymer Lithium Battery for Microphone x 2 (Included)