2 in 1 wireless lavalier microphone,,plug and play
condenser microphone
Battery capacity: 200MAH 
Receiver battery: 200MAH 
Battery life:10-12hours 
SNR: 64DBM  
Sensitivity: -38DB 
Frequency response range: 20-20khz 
transmission distance: barrier-free 20-30 meters     
Type-c and  lightning connect