Features: UHF Wireless System: The system includes dual microphone with body-pack transmitter and one receiver, featuring UHF wireless transmission, stable connection and low distortion ensure high quality vocal sound transmission. Clip-on Microphone: The wireless microphone can be easily clipped on your lapel and cloth, very convenient to install, battery powered for more portable application. Cold Shoe Phone Holder: The phone holder is widely for mostly used smartphones, it can be mounted on tripod or camera with 1/4 cold shoe mount adapter for video making. Battery Powered: Microphone transmitter is powered by 2pcs AA batteries, easy to change on your own when the battery runs out.(Batteries Not Included) Wide Application: The body-pack microphone system is widely applicable for smartphone and camera video recording, broadcast, interview, online teaching and more occasions with 6.35mm plug and 3.5mm adapter. Specification: Color: Black Material: ABS Channel: 20 Frequency Range: 60-669.5MHz Frequency Response: 75Hz-10KHz S/N Ratio: 60dB(f=1KHz, S.P.L=1PaA Curve) Sensitivity: -32 2dB(f=1KHz, S.P.L=1PaA Curve, 0dB=1V/Pa) --Transmitter Dimension: 11 * 6.5 * 2.5cm / 4.33 * 2.56 * 0.98in Power Supply: DC 3V, 2pcs AA batteries Working Current: 150mA Battery Duration: 8 hours Working Distance: 80 meters(open area) Net Weight: 80g / 2.82oz --Receiver Dimension: 11 * 6.5 * 2.5cm / 4.33 * 2.56 * 0.98in Power Supply: DC 3V, 2pcs AA batteries Working Current: 110mA Battery Duration: 8 hours Working Distance: 80 meters(open area) Net Weight: 80g / 2.82oz Package Size: 29 * 22 * 8cm / 11.42 * 8.66 * 3.15in Package Weight: 770g / 27.16oz Packing List: 2 * Transmitter 2 * Microphones 1 * Receiver 1 * Clamp Holder 1 * Cold Shoe Mount Adapter 1 * 3.5mm TRRS Cable 1 * 3.5mm TRS Cable 1 * Carrying Case