What's in the box:

ammoon Ultra-compact Condenser Microphone Phantom Power Supply +12V +48V Selectable with Power Adapter

Just connect your condenser mic to the MIC INPUT and connect a cable from the MIC THRU to your mixer or computer, then you can get low noise full-frequency response. +12 V or +48 V power selectable design for maximum flexibility.

Features:
Universal phantom power supply for condenser microphone.
+12 V or +48 V power selectable design for more flexible usage.
Ultra low-noise audio performance.
Compact size and full metal shell, portable and durable.
Comes with a power adapter, convenient to use.

Specifications:
Color: Black
Material: Metal
Power Supply: DC 12V
Power Adapter: US plug, input--110-240V 50/60Hz, output--12V 500mA
Item Size: 10.3 * 5.7 * 3cm / 4.1 * 2.2 * 1.2in
Item Weight: 175g / 6.2oz

Note:
The microphone, mixer and connection cable showed in the picture are not included.

Package List:
1 * Phantom Power
1 * Power Adapter