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 Working Voltage: 3.7V 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)1¡¢Wide Range: Small volume speakers, dual internal magnetic speakers; 3 sound generating units, completely covering 200©O. Speaker working alone or your Karaoke entertainment, it is a new experience. 2¡¢Superior Sound Quality: Portable bluetooth karaoke machine with a new generation of K song microphone. The highs are crisp, the mids are powerful, and the bass is thick. 3¡¢Dynamic Sound: Portable bluetooth karaoke machine with advanced digital processing chip, make the sound better. You can also enjoy the excellent KTV sound at home. 4¡¢KTV Function: Bluetooth connection to TV and cell phone Karaoke, good sound and fun private KTV singing is so simple. 5¡¢Multifunction: Karaoke machine support Bluetooth connection, memory card playback music, USB OTG with microphone, K song amplification function, reverb sound function and headphone output function.Manual measurement please allow some error. 1 x Karaoke Machine 2 x Microphone 1 x Charging Cable