Features: ¡¾USB-C PD Fast Charging¡¿ Built-in 4200mAh large capacity battery, with USB-C input/ output & USB-A output ports, supports charging and discharging at the same time, not only can charge your microphones, but also can charge mobile phones. ¡¾3 Charging Slots¡¿ Equipped with 3 charging slots, you can charge 1-3 products at will, fast charging to save your time and prevent the battery over-charge. ¡¾Safe Charging¡¿ Intelligent control of the charging process to prevent over-charge, over-voltage, over-temperature, over-current, safe and reliable. ¡¾With Indicator Lights¡¿ With 4pcs indicator lights to show battery capacity and charging status, and easy to grasp the charging status. ¡¾With Storage Space Inside¡¿ Increase a small storage space, you can store small items easily, such as windproof cover, small charging cable, etc. Specifications: Color: Black Material: ABS Battery Capacity: 3.7V 4200mAh Type-C Input: 5V 3A/ 9V 2A/ 12V 1.5A, max. 18W Type-C Output: 5V 3A/ 9V 2A/ 12V