Item Type: Karaoke Machine Material: Plastic, Electronic Speaker Size: Approx 8 x 8 x 8.5cm / 3.1 x 3.1 x 3.3 inches Microphone Size: Approx. 13.5 x 3 x 3cm / 5.3 x 1.2 x 1.2 inch Speaker BT Version: BT 5.3 Speaker Horn Diameter: Approx 57mm/2.24 inch Speaker Horn Output: 6W Speaker Working Voltage: 3.7V Speaker Frequency Range: 20Hz-20KHz Speaker Reverb: Charging Time: 3.5 ~ 4 hours Memory Card Slot: Speaker memory card slot supports up to 512G storage (not included) Charging time: about 2.5 hours Battery type: built-in speaker 1200mAh 2 built-in microphone 400mAh polymer lithium battery (included) Package includes: 1 x speaker 2 x microphone 1 x charging cable x 1 x instruction manual