Features 1.LARGE SOUND FIELD: Mini Karaoke machine has 3 sound generating units, double internal magnetic speakers, completely covering 200. 2.PROFESSIONAL CHIP: Karaoke machine with excellent digital processing chip, so that the sound better, you can enjoy the amazing KTV sound at home. 3.WIRELESS CONNECTION: Portable Bluetooth speaker can be Bluetooth connected to TV, cell phone Karaoke. The highs are crisp, the mids are powerful, and the bass is mellow. 4.MULTIPLE CONNECTIONS: Portable wireless speaker supports Bluetooth connectivity playback, memory card playback music, USB OTG connection. 5.LONG BATTERY LIFE: Bluetooth speaker built in 1200mAh polymer lithium battery (included), wireless microphone built in 400mAh polymer lithium battery (included). specificationItem Type: Mini Karaoke Machine Set_x000D_ Material: Plastic, Electronics_x000D_ Speaker Bluetooth Version: Bluetooth 5.3_x000D_ Speaker Speaker Diameter: Approx. 57mm/2.2in_x000D_ Speaker Speaker Power: 6W_x000D_ Speaker Working Voltage: 3.7V_x000D_ Speaker Frequency Range: 20Hz to 20KHz_x000D_ Speaker Charging Time: 3.5?4 Hours_x000D_ Memory Card Slot: Speaker Memory Card Slot Supports Up to 512G Storage (not Included)_x000D_ Microphone Charging Time: About 2.5 Hours_x000D_ Speaker Size: Approx. 8x7.2x6.5cm / 3.1x2.8x2.6in_x000D_ Microphone Size: Approx. 13.5x3x3cm / 5.3x1.2x1.2in_x000D_ Battery Type: Speaker Built in 1200mAh, Microphone Built in 400mAh Polymer Lithium Battery (included) PackageList 1 x Speaker 1 x Microphone 1 x Charging Cable NoteAll data are measured manually, and there are certain errors in the measurement results.