You all most likely know this and I've missed the thread in my search, but I'm always wondering if something is red or white LED. If there isn't a battery the sellers aren't able to tell me.
So I photographed the fronts and there's a distinct difference, white clear one on the left is the red LED.
So take your guess on which one is the red LED of these two:
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If you guessed the one on the right, you're right! Clear is red and yellowish is the white LED.