I need some recommendations for a running watch that will let me :
-play music without a phone (using Spotify).
-lets me set intervals in adjustable distances (like 200m, 350m, etc) and play a sound when the interval has finished
-track the distance I have run, and my speed.
-decent battery life (as in, with the features above running, it will last for at least 4 hours)
I do not need GPS unless GPS is required or adds significant value to these above features.