charging my sansa clip+

How long does it take to charge my clip+?  I haven’t had it that long and this is the first time I have charged it.  how do I know it is fully charged?  I am using a wall charger instead of my computer.  Bought both from Amazon and purchased at the same time so that I would know they would work together.

Not long. About an hour, if that. Check battery percentage under settings/system settings/info once you disconnect.