Most Accurate Heart Rate Monitors 2015

This watch has some many useful function including calling for help if you fall, heart rate monitor and other health app. I feel like Dick Tracy when I speak into my watch using the intercom or answering a phone call.

This is the third Apple watch I've owned. It seems that this watch works a little faster than the others. I use it as much for health issues. The Heart Rate monitor picks up the same as my belt. This is an improvement over the past watches. The Blood O2 is good, particularly now with Covid as lung function is an indication of the virus. All in all it's a worthwhile purchase.

This watch is absolutely perfect for my husband and I. We aren't sports fanatics but need to keep track of heart rate. We walk, ride bicycle, and treadmill. This watch tracks it all. Best of all, we only have to charge once every 3-4 weeks. Just wish I could get another one in the white rock color.

I can fit 2 of my BenQ 27 monitors & cables perfectly into this sweet heart!! I absolutely love it it has made my life so simple!

I have a 2015 Macbook Air, and use the Matrox to spread the Mac's desktop across three monitors (the Mac, and two external 24 HP monitors). The connection was so simple: the Matrox includes the mini display port and usb cables, and I connected the Matrox to the HP monitors with 2 DVI cables. No configuration was necessary: as soon as I connected the Matrox to the Macbook Air it just worked. What a great product.

Bought 2, so far the monitors are great. Clear, 240hz refresh rate is awesome.

Superb studio monitors, with amazingly robust, but very tight and accurate bass.

It's hard not to rate this 5 stars. It does it's job and I get accurate white balance. It was also very cheap compared to other white balancing products. I am very happy with the results.

Customer since 2015.

Most of my work is portrait so I need a good prime lens around this focal length. I considered the Nikkor equivalent but after reading various reviews I decided to give this one a try. I'm glad I did. Wide open the DOF is almost non-existent at close focus. You can use that to your advantage of course but it comes at a price since there's no AF to rely on. That's no problem for me as I've been using MF lenses for years and I trust my eye. But if you're not a MF veteran you may find the need to focus inconvenient. (Like other reviews have said the focus confirm chip isn't always accurate. I suspect there's a manufacturing spread on this and you may get lucky and receive one that is always accurate.) Technically the optical quality is outstanding and I can't add anything new here to what others have already posted.