Product Review

GEEKPRO power adatper is a unit that is primarily intended for overseas travel. You can take your 110V-only devices and use them in Europe or elsewhere. The primary benefit is the 220 to 110 transformer that is embedded inside. It would not make much sense to use this unit in the US exclusively

READ BEFORE USE

Make sure that its total wattage is less than 200w in order to avoid over-heating or damage. 
Please don't use this power converter to charge your hair dryer, hair straightener, and curling iron. 
Please don't use this converter with appliances rated at voltage 220V-260V AC. This product is only able to supply power to 110V-120V AC products 

Specification:
Input Voltage: AC 90~260V,50~60HZ
Output: AC 100~120V,60HZ
Output: 200W Rated,230W Max(Please make sure that your total rated power using in this device is less than 200W)
USB Output: 4-port 42W DC 5V±0.25V/8.5A(Max)
Input cable:three prongs AC input cable with EU plug.
Additional replaceable plugs: UK,US,AU
Protections: Over-current, Over temperature, Output short-circuit, Surge protection. 

Package Included:
1 x Travel Power converter
4 x Plug
1 x User Manual