What's in the box:

Adjustable Adaptor Charge Variable Voltage 3V-24V Universal Type Speed Controller 100-240V US Plug (Standard)

The voltage adaptor is portable in size and weight, convenient to install and use. High quality components, long service life. Plug and play, easy to use. Fine workmanship and stable performance.

Features:
Delicate size, lightweight to carry.
Plug and play, easy to use.
High quality components, long service life.
Fine workmanship and stable performance.
Manual rotary knob adjust, simple and quick.

Specifications:
Type: US Plug +UK Adapter (9-24V 3A 72W) / US Plug + UK Adapter(3-12V 5A 60W)
Color: Black
Input Voltage: AC 100V-240V
Input Voltage Frequency: 50-60Hz
Rated Output Electricity: 2A-5A
Package Weight: 172g / 6.07ounces
Package Size: 133 * 50 * 32mm / 5.24 * 1.97 * 1.26in

Packing List:
1 * Voltage Adaptor