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Mic Dimensions:    Φ6.0mm         
Sampling Rate:     48KHZ                                
Frequency Range: 2.402-2.480MHZ          
Frequency Response: 20-20000HZ        
Speaker Impedance:  16Ω                                  
Horn Diameter:     Φ50mm                       
Battery Capacity:  900mAh                             
Charging Times:  2.5H                                        
Working Times:   24H                                       
Distance:  15m                                            
Product weight:  285g