Nonin 9590-BK Onyx Vantage 9590 Finger Oximeter, 359mm x 330mm x 323mm, Black

Brilliant product. We have a disabled son who cannot tell us when he feels sick. This really helps us keep an eye on his health.

This is the third of these I have got in past few years because I keep losing them.So I have got a name plate stuck on it.Apart from that this is a wonderful product speedy stable reliableIt has kept me out of trouble on occasions where I didn’t even think O2 was likely to be compromised.Ive access to other devices but this ussoeedy and dependable and i’d be lost without itI haven’t used cheaper alternatives

Came in unsealed packaging, product didn't work. The item had obviously been previously opened and probably sent back due to it being faulty. I required this product due to a recent uncontrolled asthma diagnosis. The issue took incredibly long to resolve so I just bought another oximeter from elsewhere.

Comes on when you put it on a finger, works with children (if you can keep it on for long enough) and the display goes all the way up to 100%. I've been using it for about half a year 5-6 days per week, several times a day, have dropped it on a hard floor several times, haven't changed the AAA cells and it's still going strong. It passed it's annual calibration check

With out a doubt this is the best pulse oximeter I have owned. It is always accurate. My fingers always seem to be cold and I can get a reading when the cheaper versions won't give me one.I have had a heart attack and it is important to me to keep an eye on my pulse. This is the best way I know to do that. I would recommend this to anyone.

Fast and easy to use... works everytime. Though a bit more expensive it's reliable. It could be however be a little more sturdy for that price.

Excellent little device, so easy to use.

Only used it a few times but it stopped working 7 months after I bought It. It was not the battery which I replaced, having looked inside it I can't see how they can possibly justify the price. Never again!