Features: 1.One-button reduction: Singing is not out of tune. When singing orrecording a song, you can turn on the original and mute buttons to stabilize the rhythm of singing, and will not recordthe original singers' voice. 2.Bluetiooth 4.2 : The Accompaniment Handset may use the Connection Sound Card, avoids the connectien line too many tangles. 3.Intelligent noise reduction: Open noise reduction, sound card will be smart to reduce the ambient noise, better and save the singing voice. 4.REAL-TIME: When the live singing voice, through listening to the headset back to their ears, accurately grasp the live rhythm, to avoid pitch. 5.There's all kinds of specinl effects: Control the scene, make the live broadcast more lively and interesting just one button can be adjusted out of the preset effect.Despises, slaps, song, ki, sttn, love, brother, clap, laugh, hard, welcome, awkard. 6.Simple link method: Compatible with mobile phones, computers, tablets, support single mobile phones, dual mobile phones and live broadcast. Specifications: Material: ABS, PC Color: Black Dynamic Range: >104db Recording: 24bit/48khz Power supply: 5V 0.5A : 4.2 Battery: 1200mAh Battery (included) Size: (Approx) (LxWxH) 168*110*41mm/6.6x4.33x1.6inch Package Included: 1 pc x Sound Card 1 pc x Computer charging cable 1 pc x Live line 1 pc x Accompaniment line 1 pc x Chinese and English manual