Features:

• Rockville RWM1005VC VHF Wireless Single Lavaliere/Clip-On Microphone Mic System
  
• High performance wireless microphone system
• Includes transmitter with a Lavaliere/Clip-On microphone
• High sensitivity, unidirectional, wireless cardioid microphones
  
• Featuring a dual filter design to limit feedback and interference
• Transmitter automatically links to receiver for ease of use
• Durable composite microphone construction
• Comfortable ergonomic design
• System
  
• Operating Range: 100´-200´(indoor), 65´-165´(outdoor)
  
• Frequency Range: 80MHz-12000MHz
• Dynamic Range: 80dB
• S/N: 80dB
• Operating Temperature: 41°F-113°F
• Carrier Frequency Range: 180-280MHz
• Reciever
  
• Sensitivity: (S/N=30dB) >2mV
  
• De-Emphasis: 50µS
  
• Audio Output Impedance: 600Ω
  
• Audio Output Level: 0-0.5V
  
• Power Supply: AC110V /50Hz
  
• Current Consumption: ≤50mA
  
• Audio Out Connector: 1/4? unbalanced
• Transmitter
  
• Frequency Stability: ±0.005%
  
• RF Output Power: ≤30mW
  
• Modulation Mode: VHF
  
• Maximum Deviation Range: ±50KHz
  
• Microphone Mode: Fixed
  
• Pre-Emphasis: 50µS
  
• Power Supply: 9V Batt./1.5V×2
  
• Current Consumption: ≤35mA
  

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About Rockville Quality Control Procedures:
The Rockville brand stands for Quality, Innovation and Value. All Rockville products go through the most rigorous quality control standards in the industry. Products go through months of extensive testing before they reach your hands. All user functions are tested and all internal components are tested for quality. Rockville makes products that are virtually un-breakable! Rockville is one of the only brands in its class to test every concept model for weeks or months before starting production. Once production begins, Rockville sends product engineers to their factory to quality control every line of production. During production every product is tested and on top of that Rockville goes the extra mile and has their high level product engineers do an additional quality control. They test a certain percentage of all products from the production line a second time to ensure that the quality meets their vigorous standards, and to make sure that there is never a batch of products with even a slight problem. All Rockville products are backed with a hassle free warranty.