SlaBao Wireless Lavalier Microphone Microphone for Youtube Recording Mobile Phone Live Radio Noise Reduction Lightning Interface Specification: Material: ABS Color: Black Frequency: 2.4 GHz. Input voltage: DC4.8-5.4V. Battery capacity: 75mAh. Transmission distance: (Barrier-Free)20 meters. Microphone size: 60x20x25mm/ 2.36x0.79x0.98 inch. Receiver size: 38x12x8mm/ 1.5x0.47x0.31 inch. Note: There might be a few color distortions due to different computer resolutions. There might be a slight error due to different hand measurements. Please feel free to contact me if you have questions before and after your purchase. Package included: 1 Piece Wireless Microphone. 1 Piece Receiver. 1 Piece User Manual.