lest see. Cell phones are about 500mw-700mw at 800Mhz, 900mhz 1.8Ghz and 1.9Ghz for a quad band phone. Wifi AP's are about 100mw at 2.4Ghz and or 5.8GHz. Laptops have lower power transmitters and can be as small as 23 mw. Bluetooth is in the 2.4Ghz band too not sure on transmit power.

The higher you go in FQ the more power you need to cover the same distance.(inverse square law) Sure 2.4 GHz is the frequency of a Microwave, but those are shielded somewhat and the power can range anywhere from 800 Watts to 1500 Watts. Also from a Microwave the power is spashed over a few hundred MHz of the entire 2.4GHz spectrum instead of a narrow channel about 20 mhz for wifi.
Frankly I'd worry more about the devices we push against Our heads which are at a higher power for a longer duration and not protected by the water in our flesh instaed of in a petri dish protected by nothing.

I wonder if they did the sperm test in an RF shileded envionment.

About me:
8 years of network support
7 years IT field service

Always looking for the next project to be done.