in the US you will need the
Simran SM-1000J Step Up and Down Japanese Transformer 1000W; Can be used only in 100 and 120 volt countries; Will convert from 120 volt to 100 volt AND from 100 volt to 120 volt.; Fuse protected; Heavy duty continuous use; Power ON/OFF Switch

great product!! easy to assemble and the heater is so cozy!!! will definetely buy again

order was placed August 31, expected to be delivered October 3 at the earliest, and it was delivered September 9. easy assembly. it comes with a tool, but it's so easy i could just put it together by hand. i thought the legs were collapsible, and they aren't, but they are easy enough to take off and stack up for storage so i'm not giving a lower rating just because of that.
i haven't gotten the futon set that i ordered to go with this, and it isn't cold enough to start using the space heater yet, so i will be updating my review by december to include the heater's performance. i was very happy to see that it looks like a US plug, so i won't have to drop any extra money on an adapter (i don't know if they customize this piece depending on the customer, but converters can be found right here on amazon if you do need one). in addition, the wire completely detaches from the heater when it's not in use. i have a rabbit that has a habit of chewing on wires, so it's nice to be able to use this as a regular coffee table for the time being and not having to worry about the wire being damaged.
when looking for a futon set, or if you want to opt for a regular blanket, try to find one that's about 80x80 inches or 200x200 cm. most listings for kotatsu futon sets should specifically say that it's made to fit a 75x75 to 80x80 cm table.

A wonderful way to start a cold winter. It's great for my poorly insulated apartment without having to spend a ton of money keeping the place warm. We've used it (and the blanket, sold separately) for over a month and our electric bill is the lowest its ever been in November despite an abnormally cold month. The table is sturdy and the top that lays on the blanket is heavy enough that it does not move even though it is not inset or secured. Some people are complaining about the price of shipping or the inflated price of the product to compensate for "free shipping" but I'd say its 100% worth it considering it's such a large/heavy/awkward import item.

For taller/larger people this table may be a challenge (check/test if it'd be comfortable for you!) but as someone just over 5 ft tall it's very comfortable to stretch out under.

This is PERFECT. BEST investment I have ever made for a piece of furniture so far. Especially with the cold front coming in, this is heaven right now. It does get hot, even on the lowest setting, but it's great. Nice quality, the space heater is nice, and the shipping was FAST. I ordered near the end of October. Expected delivery was Dec 2-23, but it came in the first week of November. Very happy! :D I highly recommend.