Very easy to install. I have a Garmin vivoactive 4s and it fits like a dream! I installed it and put it back on my wrist within 3 minutes. You have the option to watch a video prior to installation, but I only followed the written instructions! I thought with six of them if I don't get it with written instructions I'll watch an instruction video: but I don't need it. As I said, fits like a dream and can't even see it!
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