I'm surprised Nords hasnt jumped in here yet. He claims the older microwaves are actually better 'shielded' than the newer ones so moving to a newer one for vague safety purposes may be counterproductive.
Hey, this morning's surfing was awesome and I just woke up from my nap.
I have a hard time believing that modern microwave shielding is better than the 1980s just because it's one-tenth the size & weight of its ancestors. But if anyone knows of an objective study then I'm willing to abide by its findings. From a safe distance.
What we really should be concerned about are the standards, not the compliance. Back in 1982, when the Navy's radiological controls manual was only 2" thick, we young nukes learned the "quality factors" for the damage caused by alpha, beta, gamma, and neutron impacts on humans. Each quality factor was a multiplier reflecting the energy & damage potential of each type of radiation. (I believe the QFs were derived from research conducted on survivors of Hiroshima & Nagasaki.) Then, being nukes, we carried out exhaustive calculations regarding what type of shielding you needed, how close you could get, and how long you could stay. Exciting times.
In 1993 some world health authority convened a gathering of experts who evaluated the last few decades' progress in quality-factors research plus new data from nuclear plants & hospital equipment. When the convention was over, they raised each quality factor by a multiple of at least three. The associated "standards" were suddenly at least three times more stringent. Our radcon manual also promptly tripled in [-]shielding[/-] thickness.
While we nukes were wandering around submarine engine rooms with dosimeters and radiacs (and occasionally the rest of the boat, not to worry), the corpsman used to wave his RF meter over the ship's microwave oven every month. He always blessed it as complying with the federal standards. However whenever we were on station we secured that microwave oven because the ship's "electronics support measures" antennae, 20 feet away and outside the ship's steel pressure hull, could pick up its 2.4 GHz signal quite easily. Not to worry.
So, even if you've already passed your genes to the next generation, next time you're making popcorn I wouldn't hang around a microwave oven watching the [-]testicles[/-] kernels pop.
And it's been a long time since I've studied my electromagnetic wave effects, but I'm sure that a watch battery's electrons get pushed around by even the best-shielded magnetrons. There's just not a federal standard for protecting watch batteries.
And, as has been previously mentioned, watches are not required ER equipment. Unless you have to wake up from a nap in time for something more important... yeah, I know, oxymoronic.