Features [Bluetooth Transmission] The audio signal is transmitted via Bluetooth, no need for cable connection, more limited, get rid of connection problems. [Noise Reduction] The sound card adopts DSP chip processor, which has a good noise reduction effect, more delicate sound processing, and stronger sound beautification effect. [Anti-Interference] The sound card has a one-key protection function. Once the shielding function is activated, the anchor will actively block the background sound when you speak. [Easy Installation] The sound card is plug and play, without debugging, the steps are simple and the operation is convenient. [LED Display Screen] Various sound card operations will be returned to the LED display in real time, and the working status is clear at a glance. Specification: Item Type: Voice Changer Sound Card Material: ABS Channel system: dual channel Output Sample: 44.1KHz Sampling resolution: 16bits Battery: 18650 3.7V 1200mAh Li-ion battery (built-in) Package list: 1 x Voice Changer Sound Card 1 x Charging Cable 2 x Audio Cable 1 instruction Package List 1 x Voice Changer Sound Board 1 x Charging Cable 2 x Audio Cable 1 x Instruction