Easy to install and use. Check diameter of your handlebar first, though.

I need it to fit a 2" diameter opening and it's for 3"

I don't like large watches so I went with the 42mm. It's perfect! It does everything I wanted it to do and more. I rated one star on sleep tracking only because I don't sleep in it. The battery life is amazing! The first time I wore it for a full day, I had it on for 15 hours and still had 75% charge.

The battery does not last as long as I would have hoped but I opted for the 42mm anyways. With running everything(gps, wifi, etc) it last about two whole days. Runs great, awesome features. Took awhile to get used to navigating it, but now it's so simple. Seems durable; I banged it against some metal objects already and you'd never know it.

We just returned from Yellowstone. The polarized lens made a huge improvement over the no filter shots. I compared a couple pictures with and without and the without shots were all washed out. My wife made some simple edits before photo sharing and she said the time was cut way down in part due to the new camera and in part due to the polarized lense. I would absolutely repurchase.If anyone is wondering about the sizes, they relate to the diameter of the lens not the thinkness of the filter (I'm new to photography). The lens on your camera will have the lense diameter printed on it

Product works well. The first issue is that it can’t mount to the larger diameter on the frame. I could only mount it to the handlebar. Also it would be nice if it could swivel up and down with phone attached not just the ball that turns the phone around. If you have a pop out button mounted on the back of your phone that gets in the way. Maybe you should have 2 slides for top and bottom.

Folded diameter is about 8 inches which makes it possible to take on most outings.

This lens could really only be good or bad ... and I have to say this is a great fixed level ND filter.Does exactly what it should do and does it well.The lens thread runs smooth and true, and although I can get in to fit on most of my lenses using expansion/reduction rings, this fits perfectly on one of my old, but favourite Canon 14-40 zoom lens with its 77mm diameter (using on a Sony A7R3).Provides consistent covering across the whole lens and frame and definitely gives 10 stops.Haven't tried it out in anger yet - planning a 'waterfall trip' soon though, but basic testing confirms consistent decrease of light, causing a decrease of shutter speed using a fixed Aperture and ISO.Also, the inner diameter accepts the lens cap and the lens cap stays securely on.Overall, at £38.99 (at the time of review - September 2022), I would say that is great good value for a decent 10 stop ND filter.An easy 5 ⭐⭐⭐⭐⭐ imho.