We bought one of these a few weeks ago -‘Dreamcatcher Luxurious Electric Throw’
View: https://www.amazon.co.uk/dp/B01IWQNBRW?ref=ppx_pop_mob_ap_share
Sadly it seems there’s some profiteering/supply&demand inflation as the price has rocketed in only a few weeks.
I use it in my work from home office chair and sit on it, rather than wear it over me. It has 8 heat levels and I usually use setting 2 or 4 so far. 8 would be too hot for me. The timer does 1-9hrs which is perfect for the workday. It’s quoted at 100-120W, possibly based on the supply voltage being 220-240v. I’ve not measured what it’s drawing but on the settings I use would be surprised if it used more than 60W.
I love it! It’s like a car heated seat if you’ve ever sat in one and does a good job of heating your core. I’m surprised people reckon they are not warm enough - certainly not my experience.
For comparison we have an electric blanket in the bed too, also rated 100W per side and settings 1-8 heat - rarely used above level 3. Maybe just not feeling the cold yet - even if we are very tight with the heating