I was at the Apple Store yesterday looking to buy the space grey. I'm not a huge fan of the sport band and asked about the classic buckle. The girl told me I couldn't because of the aluminum reacting with the stainless. Was I misinformed? I left without the watch for that reason
There is truth to this. It's called galvanic corrosion. Just google "aluminum stainless steel galvanic corrosion" and you can read all about it. Basically it's a reaction of two dissimilar metals in contact with each other. Add sweat/salt into the mix and it gets interesting.
Even if Apple has some sort of protective coating on the metals, the process of sliding the connectors on and off would wear it down eventually I would think.
Whether or not it's a potential issue for the watch, I don't know. If it takes several years to happen, then perhaps its not really an issue since these aren't "lifetime" type watches really.
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