Feature:1. HD Stereo: Bluetooth speaker microphone set with sound driver and advanced digital signal processor for clear sound, moderate volume and no noise. Press and hold the volume button when playing music, easy to adjust the volume.2. Sound Change: Bluetooth karaoke machine has 6 kinds of sound effects, standard, KTV, female voice, male voice, baby voice, a variety of sound change, one button to switch, bring more fun. Perfect for family outdoor party, classroom, speech, etc.3. Multifunctional: Karaoke speaker with built in Bluetooth 5.0 chip for wireless transmission and fast pairing, providing more stable transmission and longer distance. It also supports small memory cards, USB connection, and can also charge cell phones and microphones.4. Small And Portable: Wireless karaoke speaker and mic for your smart devices, TV, tablet and PC, mini size, dose not take up space, easy to carry, whether at home or traveling, you can put it in your car, suitcase or bag.5. Long Battery Life: This karaoke speaker has built in high capacity 2000mAh rechargeable battery for 5 hours of continuous music playback and a microphone with a high efficiency 1200mAh rechargeable battery.Specification:Item Type: BT Speaker Microphone SetMaterial: ABSSpeaker Parameters:BT Version: 5.0 VersionMemory Card: Maximum Support 32GB (Not Included)Speaker Diameter: Approx. 57mm/2.2inSpeaker Power: 6WFrequency Range: 20HZ-20KHZReverb: Aftersound Effect ReverbBuilt in Battery: Lithium Battery 2000mAHCharging Time: About 2.5 HoursMicrophone Parameters:Pickup: Back Pole Condenser MicrophoneBuilt in Battery: Lithium Battery 1200mahFrequency Range: 20HZ-20KHZCharging Time: 3.5 to 4 Hours.Package List:1 xBT Speaker 1 x Microphone1 x Charging Cable 1 x Instruction Manual