emb em-200w professional wireless microphone system dual handheld (2 microphones) 1 cordless fm receiver including 1x 1/4" jack cable/frequency range: fm121.7-128.7mhz emb emb microphones are in the top place of market. since couples of years it is one of the best choices of good sound producer, singer, listeners, and speakers. various technology and models and attractive features make these microphones great. among the other microphone system is easy to use and high-quality device. here is some specifications of emb em-200w professional wireless microphone system dual handheld (2 microphones) 1 cordless fm receiver: # package contents: 1 * receiver / transmitter / 2 * wireless microphone / 1 * 1/4" jack cable # product features: frequency range: fm121.7-128.7mhz / frequency response: 100hz-10000hz (±3db) / audio distortion: less than 1% # dynamic range: 80db / operating temperature: 0°c-45°c / service ares: 10m / package size: 36.5*6*27.5cm # transmitter microphone: type of emission: fm / s/n ratio: better than 80db rf / output power: 8mw (50mw maximum) / frequency deviation: 75khz # receiver: type of receiver: fm / s/n ratio: 50db / reception mode: super heterodyne space diversity / audio output level: >25mv / reception sensitivity: 600w(unbalanced) / power:30db/ μv it is a good quality microphone set. our customers are loving this item and we are getting positive response and feedback from them.