Item Type: Karaoke Machine Material: Plastic, Electronics Speaker Model: K16 Speaker Bluetooth Version: 5.3 Speaker Power: 5W Speaker Diameter: Approx. 57mm/2.24in Speaker Frequency Range: 20Hz-20KHz Speaker Operating Voltage: 3.7V Memory Card: Support up to 128GB Memory Card (Not Included) Microphone: 2.4G Wireless Transmission Pickup: Back Pole Type Condenser Microphone Microphone Operating Voltage: 3.7V Battery Type: Speaker Built In 1800mAh x 1, Microphone Built In 400mAh x 2 Lithium Polymer Battery (Included) Package List 1 x Bluetooth Speaker 2 x Microphone 1 x Charging Cable 1 x Instruction Manual 1Superior Sound Quality: Karaoke machine support 360 degree surround sound, 2.2 inch speakers with large diaphragm, treble is bright and transparent, midrange is clear and dynamic, bass is deep and powerful. 2Karaoke Function: Portable bluetooth speaker supports wireless karaoke, comes with reverb, KTV level surround sound, comes with five kinds of karaoke sound effects, make singing become fun. 3RGB Light: portable bluetooth speaker has 9 kinds of 16.8 million colors, with RGB light switching, the artistic sense of the LED dazzling light flashes in seven colors, exudes a fashionable and cool ambient, so that your entertainment and games with more sense. 4Long Battery Life: Karaoke machine with 57mm 4 ohm 5 watt speakers, with 1800 mAh high capacity lithium battery, let you listen to songs anytime and anywhere. 5High Performance: Karaoke machine adopts advanced chip, low power consumption, high sensitivity, strong anti jamming, no frequency break, ultra long reception distance.