Product information:

Product Name: Microphone
Microphone type: external sound card microphone
Pickup type: dynamic type
Sensitivity:-35dBm / 10 dynes / cm2
RF range:673.5MHZ-694.9MHz
Step channel number: 50 (text hold ○U)
Frequency response:40Hz~18Hz
Distortion: <0.3A% weighted 1KHZ output
Output power:>8dBm
Offset:±40KHz
Harmonic radiation:<-50dBm
Maximum input sound pressure: >130dB SPL THD <1%
Signal-to-noise ratio:>100dB(A)
U-band transmitting distance: > 50 meters (no interference environment)
Power supply: built-in lithium battery
Charging time:about 3 hours
Use time:about 12 hours
Color:one tow standard version,one tow bluetooth version,one tow two standard version,one tow two bluetooth version

Packing list:

Receiver * 1
Microphone * 1
Power supply * 1
Windshield * 1
Slip ring * 1
Charging line * 1