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Specification:
Item Type: Wireless Lavalier Microphone
Material: ABS
Model: K9
Frequency range: mobile phone wireless
Frequency response range: 20-200KHz
Microphone built-in lithium battery capacity: 2 x 60mAh (built-in)
Transmission distance: 20m / 66ft
Transmission delay: 30MS
Sensitivity: -42dB
Microphone: Silicon Microphone
Signal-to-noise ratio: 64dBm
Use time: about 4 hours
Packing list:
2 receivers
1 transmitter
1 x Manual
1 x charging cable