Features: Black Karaoke Machine—It's easy to use as a Bluetooth speaker, KTV singing, YouTube live broadcasting or interviewing. It can be used with karaoke phone apps such as Yokee, Smule, Tik Tok and so on.  Wide Compatibility & Multipurpose—This Bluetooth wireless karaoke microphone is compatible with for iPhone/Tablet/Android Smartphone/Smart TV, it supports Duet,Volume Control, Vocal, Bluetooth Connected, Karaoke Singing, Music Playing.  Superior Sound & Bluetooth Louder Speaker—Built-in louder speaker, and it has 3-layer filter to avoid crackling or popping. Enjoy perfect clear sound, crisp high tones and comfort.  Extra-long Working Time—Built-in 3000mah rechargeable lithium battery, which supports music playing for 6-8 hours, you could enjoy singing for a long time, make your own mini KTV anywhere. And as a gift for kids, adults, women or wife.  Portable Leather Handle Design—The excellent leather handheld handle and premium hard metal body design of the portable karaoke microphone is suitable for your hand, which can make you feel more comfortable.     Specification: Bluetooth: BT 4.2 Bluetooth connection distance 8-10 meters;  Battery capacity: 3000mah lithium 18650 battery;  Product size: 11.3 x 3.1 x 8.9 cm;  Weight: 407.5 grams (14.37 ounces);  Use time: about 6-8 hours at medium volume;  Rated voltage: DC 3.7V;  Charging voltage: DC 5V 500mA;  Output: 5W;  Frequency range: 100Hz-10KHz;  SPL: >115dB 1KHz THD<1%;  Reverberation mode: echo reverberation;  Interface: charging jack/recording jack; TF card slot;     Package List: 1 * Bluetooth microphone;  1 * USB charging cable;  1 * Recording cable;  1 * User Manual