Features: It can convert your wired dynamic microphone into a wireless one with convenience. This product is perfect for musicians, singers, public speaker. Whether you are performing stage, giving a speech at an event, or recording in studio, this wireless microphone converter can make your life easier by eliminating the need for cable and wires. With portable design, this product is easy to carry around. Operation ranges about 30m/98.43ft. (Affected by environmental factors). Specifications: Material:Metal Frequency response ranges: 20Hz-20kHz Wireless Transmission Distance: 30m/98.43ft Size:Approx.11.5x3cm/4.53x1.18in Colour: Black Number of channels:20 Battery life: 6 hours Power supply:TypeC charging Delay: about 3ms Sampling rate: 24bt/48kpbs Audio Note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Wireless Microphone System Receiver 1x Wireless Microphone System Transmitter 1xUSB Cable 1xManual