I work as a sleep lab technician and make a living doing EKG observations every day. I needed a device for self-control. Viewed all units on Revain. I really feel like this is without a doubt the one to buy. 1) It has a built-in display, so you can use it without a cellphone. Just carry it in your purse or pocket, or keep it by the bed - turn it on and it works. 2) It has extra leads (wires) so you get a decent quality recording if you want to share something with your doctor. With each unit, you get a lot of artifacts by holding them in your hands, even if your hands are hard as rock. When using the cords, you don't have to hold the device—you can just relax. You don't always have to use leads, but if you're at all unsure or want to share a post, using leads is super easy. You should buy some red dot ECG patches (cheap) to use with the leads. 3) You don't have to use a PC at all, but if you want to, the software is very easy to install on a PC and it's very easy to download and print or email the records. I only needed a few minutes. 4) You can take an EKG in just 30 seconds, but you can also take an EKG in 5 minutes. That's a huge advantage. A 30-second EKG will miss many abnormalities. Five minutes makes a much better sample for your doctor to review. Now all they have to do is add the ability to record for 8 or 24 hours!
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