The HS8286 microphone system is a rechargeable microphone offers charging station.  The rechargeable battery offers between 5 to 7  hours of battery life per use.Y( It is recommended to use a high quality rechargeable batteries from here.)  Compared to older Nickel-Cadmium batteries, the Ni-MH batteries have no memory effect and each battery can be re-used hundreds of times.  You can save hundreds of dollar every year on buying batteries and protect the environment too from disposable batteries.

Receiver:

• Receiving System: Fixed Frequency crystal-controlled

• Sensitivity: 12dB for 60dB S/N

• Audio Output: 25K unbalanced: 0-0.5V/5K ohm, 15KHz deviation

• Output Connectors: 1 1/4" unbalanced output jack, 2 XLR balanced output jacks

• Power Supply: 16V

• Dimensions: 13 3/4" X 6 3/4" X 2"

Transmitter:

• Battery: 1.2V chargeable battery

• RF Output: 10mW

• Nominal Deviation: 25KHz, Max 40KHz

• Battery Life: apprx 5 continuous Hours per charge

• Power On LED

• Battery Low Indicator

• Silence circuit eliminated popping noises when the switch is turned on or off

• Wide frequency response with low harmonic distortion

• Perfect mute function and high spurious emission

System:

• Operating Frequency: VHF high band, 176.805MHz to 212.105MHz

• Frequency Stability: 0.005%, crystal-controlled

• Modulation Mode: FM
  Audio Frequency Responses: 40Hz to 15KHz @+-3dB, THD<1%

• S/N Ratio: > 70dB

• Image Rejection: <700dB

• Distance: 200 ft in door, 400 ft outdoor.

Package Included:

• 2 VHF Wireless Microphones

• 1 Receiver

• 3ft 1/4" to 1/4" Microphone Cable

• 4 x  AA rechargeable Ni-MH batteries.( For test use only, you need to buy high quality batteries to run a long time)

• Instruction Manual

• 1 Year Limited Warranty