I am thinking about purchasing a Nike apple watch 3. I will be strictly using it for my forced morning work outs/runs. I need to replace my current Nike app watch and really like the Nike app and want to continue using it. I understand this watch is a little pricy to use as only a work out tool, so I guess my main question is how durable is it? can I actually download music on it to listen to wail I run (no my phone wont be with me)? Is the battery life decent? thanks for any help in advance.