Green Lion 4 in 1 Microphone Adaptive Noise Reduction Type C – Black

o-noise ratio: 64DBM adaptive noise reduction

-Transmission distance: Barrier-free 20m-30m

-Charging compartment battery: 600mAh

-Frequency response range: 20-20KHz

-Transmission delay: 30MS

-Battery capacity: 60mAh

-Wireless Transmission

-Battery life: 5 hours

-Sensitivity: -75DB

-20 Meter Access