Summary: Has a micro-USB charger, which is nice. I haven't had it long enough to tell how long a charge lasts. My previous Samsung was a WEP470, which had lousy sound quality and fit poorly, but at least stayed on my ear.
Pros: Good sound quality.
Cons: Lousy ear fit. The low profile design is such that the earpiece doesn't fit into the ear canal. The loop is a lousy design and just hangs on your ear, so the unit easily falls out.