No, it does not require IP68, an IP67 standard will survive immersion to 1 meter for 30 minutes. The all Apple iPhones models 7, 7 plus, 8, 8 plus , and all X models since 2016 will survive that with no problem. Any IP67 device can survive a mere dunking in a toilet or a bath or washbasin. You don’t know what you are talking about.
IP68 is immersion below 1.5 meters for more than 30 minutes and the manufacturer must designate to what depth it is certified to meet. IP68 includes depths to a 1000 meters. There is no such thing as “waterproof” standard, only “water resistant.”
“You don’t know what you are talking about. “
I notice that you did not post anything where I erred.
“IP68 is immersion below 1.5 meters for more than 30 minutes and the manufacturer must designate to what depth it is certified to meet.”
LOL! And you claim I don’t know what I am talking about!