Ⅰ. EXCELLENT PERFORMANCE: The mini karaoke machine is equipped with a voice frequency driver and an advanced digital signal processor, ensuring crystal clear sound, moderate volume and zero interference. Small in size, ultra-light, compact and with a portable handle, it is easy to take with you wherever you go. Ⅱ. ADJUSTABLE FUNCTION, BLUETOOTH 5.3: The upgraded microphone system allows users to individually adjust the reverb effect and music volume, giving them complete voice control. Using Bluetooth 5.3 technology, the microphone connects instantly and maintains communication up to 10m away. This karaoke machine supports micro memory card connection and is compatible with Android phones, IOS tablets, tablets and PCs. Ⅲ. LONG PLAYTIME: The karaoke machine has a built-in rechargeable battery that provides up to 5-10 hours of continuous play. Whether it's a birthday party, classroom activities, or outdoor adventures, this portable Bluetooth speaker and wireless microphone will keep you entertained. Ⅳ. DIFFERENT SOUND EFFECTS AND LIGHTS: With different sound options, your song will sound great every time. With the random changing LED lights, the karaoke machine creates an upbeat and lively atmosphere, perfect for all types of parties. Ⅴ. IDEAL GIFT: The karaoke machine is a great birthday or Christmas gift for kids of all ages. With its good sound quality, design and easy-to-use features, it is sure to please any lover. Ⅵ. Specification: Item Type: Small Karaoke Machine; Material: Metal, ABS; Speaker Built-in Battery: Lithium 2000mAh; Microphone Built-in Battery: Lithium 500mAh x 2; Bluetooth: 5.3; Frequency Response: 60Hz-18KHz; Bluetooth Transmission Distance: Approx. 10m/32.8ft; Maximum Sound Pressure Level: >115DB1; Speaker: 57mm 4Ω 6W 50 Diaphragm; Distortion Level: ≤0.5%; Memory Card: Maximum Support 64G (Not Included); Package x1 Microphone x1 Charging Manual