Accuracy of readings?

Got an index BPM as well as 2 other monitors. The index is consistently off (high).

It's the most inaccurate of the 3 and consistently 10-30 points high on systolic and weirdly 5-10pts low on dia. 

Will be sending it back. If there was a way to calibrate it or update it to be accurate it would be OK but there isn't. This is useless as-is and I'm disappointed in Garmin here. 

Got an index BPM as well as 2 other monitors. The index is consistently off (high).

It's the most inaccurate of the 3 and consistently 10-30 points high on systolic and weirdly 5-10pts low on dia. Sometimes the dia is accurate though. 

Will be sending it back. If there was a way to calibrate it or update it to be accurate it would be OK but there isn't. This is useless as-is and I'm disappointed in Garmin here. 

At this point the official Garmin response seems pretty clear. 

Essentially,  "too bad for you, not our problem,  must be user error."

Followed all these instructions to a T still off by 20-30 pts. Bottom line is that the hardware is faulty, recall all of them until there is a fix. It is dangerous to provide people with innacurate data about their health. 

Same. I've also followed all the directions and read all the guides on it. 

I even tested it with multiple people. The device is just inaccurate.

Not to mention that the device sometimes refuses to even get a reading. From several HUNDRED readings I did during testing I got four errors from the Garmin. Zero errors from other devices and the others were spot on accurate with each other. 

Frankly I expect better from Garmin.This is hurting your brand image. 

I purchased a Garmin Index BPM Sept 2022 and have contacted Garmin Customer Service about the inaccurate readings. As others on this forum have said, I was told how to do the readings exactly as per the manual and was told it could not be recalibrated even though the readings are so much higher than the readings on my Life Source machine or at the Dr's office.

June 11, I wrote to the address in the maual (In Australia, see below) 

Garmin Australia 30 Clay Place Eastern Creek NSW 2766 Australia Phoner 1-800 235 822.

I can't believe I actually got a phone call from Garmin today 7/5. They are going to exchange/replace my Index BP. If ithe new one is still inaccurate they will refund my $.

Bridget (in Kansas) told me to tell all of you to contact Customer Support (which I know most of us had already tried) since Garmin cannot do anything if we only complain on the forum. Here is Bridget's info

Thank you for your post. After chatting with Garmin customer support, I am returning the unit because of how wildly the readings are off from my Omron meter. I also measured my BP at a kiosk here are work and the readings aren't even close to what I'm getting with the BPM Index. Perhaps I will purchase another one next year once some of the bugs are worked out. The good news is I can add the measurements manually to the Garmin Connect app or website, for tracking purposes.

A year later my new index is reasing 10 to 20 pointe higher than the.doctor's butnthe ratea are going down in the right direction.