V-450 wireless microphone

Specifications:
Frequency: Fixed frequency (Channel A: 224.3MHz, Channel B: 242.2MHz, Channel C: 227.6MHz, Channel D: 246.3MHz)
Frequency Stability: +/- 0.005%
Dynamic Range: 100 decibels
Maximum Deviation: +/- 45kHz
AF Response: 80Hz-15kHz (+/- 3db)
Total Signal-to-noise Ratio: 105db
Overall Distortion: less than 0.8%
Receiver Sensitivity: 12dBuV (80dBS/N)
Total Harmonic Distortion: less than 0.3% (at 1kHz)
Harmonic Interference: more than 50db
Mirror Interference: more than 60db
Transmission Power: 10 MW AI high power, 3 MW low power
Working Environment Temperature: -10 celsius ~+40 celsius
Transmission Distance: 80m/262ft
Receiver Power Supply: EU Plug, US Plug (optional)
Microphone Power Supply: uses 2 * AA batteries (but batteries are not included in this product)
Receiver Size: 22 * 17.5 * 5cm/8.7 * 6.9 * 2-inch
Microphone Size: 24.5 * 5cm/9.6 * 2-inch

Package List:
1 * Receiver
4 * Microphone
4 * Anti-slip Ring
1 * Power Cord
1 * 6.35mm Microphone Cable