The unit is rated at 200 watts. (DISREGARD MY COMMENT IN MY VIDEO RE: 250 WATT CAPACITY) Most questions you'll have will be about figuring out what devices you can power from this converter so that you don't exceed the total of 200 watt output capacity. Even if you exceed the unit's power-output-rating, the unit has internal protectors which will prevent damage to the unit. Most important recommendation to anyone who isn't "tech saavy" and has questions about what devices can be used with this adapter; talk to someone who is. Most "electro-mechanical" devices like shavers and small table top fans consume under 75 watts. And most electronic devices have labels with power consumption on the power supplies or on the item itself. Most laptop and cellular phone power supplies are rated to operate from 110vac to 220vac. So you wouldn't need this converter. But, for instance, if you have your phone but no charger-power supply available, you'll be able to get power from the unit's four USB outlets. Just one of many great features of this device.
About the multiple cooling fans inside the converter......
While I try never to dismiss someone's complaints... (all things in life are relative, right?)... Unless I heard wrong, based on the manufacturer's/distributor's video, there are multiple mini-fans within the converter. This is understandable given that this is a power-converter/power supply. I bring this up as there have been comments/complaints relating to the noise level of the converter. The unit I have does generate a very low-level fan noise, which I'd say is typical for a laptop computer cooling fan. I never felt it was at a bothersome level; only noticable when I focused on it. And frankly, it's one way of knowing you've left the unit in the "power-on" state. (there's an on-off button and a colorized usage light too). My thoughts are that whomever does have an issue with the low-level fan noise, may have an "out of specifications" unit, or they're applying unreasonable expectations for near-absolute silence. We're using this in our bedroom. And my wife is extremely sensitive to noise. She's never made mention of the cooling fan. And I left Vietnam with ringing in my ears that's been a constant companion for my entire adult life. So a little mini-cooling fan noise is the last item on my "priority list." Enough said.
We've been in Brazil for the past three weeks of a one month trip, and have used the converter, primarily, to power a small table top fan, and to charge our phones and Ipad devices. It's been a perfect, compact, and easy-to-tote solution. For years, both we, US residents, and our family in Brazil, have resorted to "transformers", (rather heavy), when needing to "drop voltage (220vac to 110vac)" for the many US based appliances and devices we've brought, or were being used here. This is one of the items I've purchased on Amazon where I only have "POSITIVE COMMENTS." It's doing exactly what is needed. I'd certainly recommend this device to others.