the power consumption is listed in the manual not on their website unfortunately. as for sturdiness these things are built for restaurant use and it’s where they are mostly found for the purpose of infrequent instant hot water where one usually boils a full kettle from scratch. I’ve burned through three standard electric kettle here in the US over the years and had enough.

not just a kettle but one you buy for life and that permanently keeps the water at 208 F while using only 10 Watts/h

Zojirushi https://www.zojirushi.com/app/product/cvjac