Audio 2000's AWM6074U Dual Handheld UHF Wireless Microphone System 20 Key Features• Heavy duty Z style frame Key Features• Heavy duty Z style frame exceptionally stable design supports everything from lightweight portable keyboards to large 88 key digital pianos and workstations• Adjustable height and width easily accommodates a wide variety of keyboard sizes while allowing a comfortable playing position whether seated or standing• Folding design collapses quickly for transport and storage without requiring complete disassembly• All steel construction durable tubing and reinforced joints are built to handle years of rehearsals engineered and manufactured in the USA to the most stringent quality controls in the industry UHF Band Frequency (571 598 MHz Two Handheld Microphone Transmitters Included