Item Type: Karaoke Machine SetMaterial: Plastic, ElectronicsSpeaker:Speaker Model: K16Speaker Bluetooth Version: 5.3Speaker Power: 5WSpeaker Diameter: 57mm/2.2inSpeaker Frequency Range: 20Hz to 20KHzSpeaker Operating Voltage: 3.7VMemory Card: Supports Up to 128GB Memory Card (not Included)Battery Type: Built in 1 x 1800mAh Battery (included)Microphone:Microphone: 2.4G Wireless TransmissionPickup: Back Pole Type Condenser MicrophoneMicrophone Operating Voltage: 3.7VBattery Type: Built in 1 x 400mAh Lithium Polymer Battery (included)Package List1 x Bluetooth Speaker1 x Microphone1 x Charging Cable1 x Instruction Manual1SURROUND SOUND: Support 360 degree surround sound, 2.2inch speakers with large diaphragm, the treble is magnificent and transparent, the midrange is clear and dynamic, and the bass is deep and powerful. 2SELF REVERBERATION: Speakers with KTV level surround sound, wireless microphone comes with five karaoke sound effects, make singing become fun. 3RGB LIGHTING: 9 kinds of 16.8 million colors, with RGB light switching, exudes a fashionable and cool feeling, allowing you to entertain the game with more feeling. 4LARGE SPEAKER, LONG LIFE: Equipped with a 57mm 4 5W speaker with 1800 mAh high capacity lithium battery, allowing you to listen to songs anytime and anywhere. 5APPLICABLE SCENE: Karaoke machine set is compact and portable, easy to carry and use, suitable for outdoor, indoor, teaching and live broadcasting scenarios.