Transmission:2.4G Charging current:70mA Charging compartment capacity:600 mAh Battery capacity:60mAh Frequency Response:40 Hz - 20 kHz Product Name:Wireless Microphone Battery life:6 hours Signal to noise ratio:75db Charging time:about 2 hours Input voltage:DC4.8-5.2V Due to different batches, there may be differences in product appearance, color, and printed text, which will not affect the use. Type:C:for Android Type C Colour:Black Material:Plastic+Aluminum Alloy Package Contents: 1 * Wireless Lavalier Microphone Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.