The item is 2in1 Handheld Cordless Microphone Undirectional. It can be dual-used, and for wireless, it makes free of dragging cord, lets without the concern of battery power . It is a for you when choosing microphone . Features - Color: Black. - Material: Plastic. - Size: 24 * 10.5 * 6.5cm(L * W * H). - 2in1 & wireless functions, combined both and wireless functions. - Fashionable and practicable design. - Light weight and portable. - Wireless let free of dragging cord, let you singing without the concern of battery power . - 6.3mm (please make sure your device have this female port), working distance: 8-20m. Specification - Operating voltage: 1.5V. - The Length of the Microphone Cord: 2.5m. - Microphone sensitivity: -54dB 3dB(0dB=1V/ ). - Direction: Un-directional. - Frequency response: 100Hz-10,000Hz. - Out put impedance: 600ohm. - Working distance: 8-20m. - Impedance: 600ohm. - S/N ration: 60dB. - Reception sensitivity: 30dB/uV. How to use: : Make sure the battery is not in the microphone. And plug to the microphone and your audio amplifier. microphone to MIC position, and start to sing. Wireless: 1. Install batteries into both microphone and receiver. 2. on them, the connection will be built easily. With LED indicator. 3. microphone to ON position, and start to sing microphone to MIC position when you short break. It won’t collect to the microphone if it does not work normal. 4. Use a screw or pin to press on the receiver If you don’t use it for time. Please take the batteries out to protect the microphone’s components. Package list: 1 x Microphone 1 x Microphone Wireless Receiver(Not include battery) 1 x Microphone Wireless x Microphone Cord 1 x User Manual