Haomuren M6 Mini Wireless Lavalier Microphone - Black

Wireless transmission: 2.4GHz Sound delay: <20MS Frequency response: 20Hz-20KHz Sensitivity: -35dB Signal to Noise Ratio: -65dB Transmission distance: 20 meters (turning) -40 meters (visible) Microphone: 360-degree full pointing Battery life: Microphone 6H (33H for use with charging case) Battery capacity: Microphone:65mAh Charging compartment:250mAh Input voltage: DC4.5-5.2V Adapter: 5V/1A Weight: Microphone 5g, receiver 4g, charging compartment 45 g Size: Microphone31mm*16.5mm*17.5mm Receiver 30.2mm*17.5mm*9.2mm Charging compartment71mm*48mm*31.5mm