Hi heckling7, I have had a pacemaker since 2000 and it took awhile before I could get the same question answered. I was really afraid I would have to quit detecting because of my pacemaker. You would be surprised at how little info at that time was available. Now too I would bet. Anyway, My heart Dr., after saying he was no authority, said he thought there would be no problems so long as I did not get the detector coil (while turned on) close to my chest where the Pacemaker is located.. This has so far proved true for Common sense is the key to most situations and this is a good example I do not place ANY thing electrified, or magnetized near my chest . . A word of warning for diggers with pacemakers is to break the habit of flipping the detector on end when needing to tighten the coil nut a bit. This puts the coil up close to your chest which can cause a mishap .If you must, keep it at arms length. I would think it a good idea also not to gang up an a wad when you and your buddies are all gearing up for a hunt. My buddy with a Pacemaker got his coil up to close like that once and "felt" a reaction take place in his chest. Nothing drastic happened but he said he certainly 'sensed" some sort of reaction in his chest...I was a welder for over 40 years and Dr. also told me to hang it up!. Also told me not to shoot a shotgun. As always, but especially for us older folks, Common Sense will help get us a little further down the road.. Breaking old habits are not so easy as we would hope either,r so keep that in mind every time a coil nut needs a turn or two .HH,Charlie .