Support dynamic, 5v condenser microphone, electret or battery-powered condenser microphone, does not support 48v condenser microphone; Built-in lithium battery, can be used continuously for 10 hours on a single charge; Charging interface: TYPE C Input and output interface: 6.5mm, 3.5mm; Gain, adjustable from 0 to 20db; Three-band equalization for high, medium and low frequencies, adjustable range ±15db. Material: Aluminum colour: Black Package Contents: 1 x microphone amplifier 1 x charging cable 1 x 3.5 audio cable 1 x 6.5 audio cable 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.