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It's more scratch resistant. The stainless steel one scratches so easily! The aluminum ones tend to get little dents (particularly around the edges.)

Aside from that, it's more of an image thing. Some prefer the ceramic Apple watch because they like the way it looks. Others just like the image of having a more expensive watch.

I personally think it's a waste of money and don't own one. I've owned the sport and stainless steel and both look better than the ceramic IMO.
 
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Ceramic has been used in classic high-end watches since the sixties.
It's seen as a light weight, durable and premium material to make a watch case from.
 
For the ceramic back, you have one more addition of allergic-friendly. I have allergy to the composite back, But no allergy to ceramic back.
 
Same argument. See the composite back of an aluminum watch and compare it to the ceramic back of the Stainless Steel one. Composite gets scratched easily.

When I did own the sport watch, I never had issues with the composite back scratching. I understand that it can scratch ‘easier’ versus the ceramic backing, but I see it as the watch is either on your wrist or on the charger most times. I never had issues with scratching. I believe it depends really also how you treat your watch.
 
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When I did own the sport watch, I never had issues with the composite back scratching. I understand that it can scratch ‘easier’ versus the ceramic backing, but I see it as the watch is either on your wrist or on the charger most times. I never had issues with scratching. I believe it depends really also how you treat your watch.

True, but main point is if you’ll use it for a long time and don’t want to *think* about scratches, then a ceramic back model is for you. Unfortunately, that means Alum Series 3 with LTE is the only cheapest option, even then you’d have to take care of the ion X glass front.

3 years with my S0 and nary a scratch on the sapphire front and ceramic back. Compare that to a S0 with an ionX front & composite back that’s still in service today.

Anyway, it’s all aesthetics, the heartrate monitor will still work reliably even with a little bit of scratch.
 
S0 used until I replaced with a S3. Weight train 4-5x a week, run, bike cardio 4-5x week and every kind of usage abuse. Now a backup and thrown in a kitchen draw with odds and ends. Probably need to move it now that I dug it out.

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The ceramic back is indeed more scratch resistent than the composite one (but the scratches aren’t in view and the heart rate monitor still works so not really an issue) and for some people it’s better in terms of allergy but for me the additional weight of the stainless steel watch (I’m guessing I’d be fine with the aluminium with ceramic back) means I do sometimes get a rash (presumably heat rash rather than an allergic reaction but the result’s the same).
 
I’ve seen a lot of used aluminum watches for sale on eBay that had cloudy backs. They almost looked like headlights on a car that’ve been sitting in the sun for 10 years.
 
I’ve seen a lot of used aluminum watches for sale on eBay that had cloudy backs. They almost looked like headlights on a car that’ve been sitting in the sun for 10 years.

I’m not advocating someone try what I’m suggesting, but there is a product made by Maguiars called ‘Plast-X’, and basically it’s like a fine scratch remover that you can use that removes cloudiness, oxidation and I’m wondering if that would almost work to clean the back sensor area. You can also use it to clean scratched CDs, headlights, basically restore any type of plastic that might have light scratches or cloudiness.
 
I’m not advocating someone try what I’m suggesting, but there is a product made by Maguiars called ‘Plast-X’, and basically it’s like a fine scratch remover that you can use that removes cloudiness, oxidation and I’m wondering if that would almost work to clean the back sensor area. You can also use it to clean scratched CDs, headlights, basically restore any type of plastic that might have light scratches or cloudiness.
Autosol or Polywatch :)
 
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