[12V or 48V phantom power] It's important to always have the right condenser microphone. With phantom power, you can have perfect sound and noise-free performance. [Rechargeable battery]Built-in 2200mA rechargeable battery frees you from power cords and avoids ground loop issues [Low noise ]The device's well-trimmed electrical and precision resistors meet the most demanding digital requirements and provide transparent and noisy operation. [Up to 40 hours of battery life] 14 to 40 hours of battery life, enough to get you through a show [Low battery indication] When the battery is low, a flashing LED lets you know that no more than 10% power remains. Color: Black Material: Metal + Plastic size: 13.8x3.6x4.8cm Package Contents: 1*phantom power supply 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.