Meet the ERA by Jawbone: it is a light and small headset with a design that uses the natural contour of the ear to create a secure fit. It is comfortable and offers crisp sound quality. Its Military-grade NoiseAssassin eliminates background noise even when you are in a crowd. You can use this to listen to music, work with Siri, and do a whole lot more.
ERA does have a charging case that protects it and doubles its 4-hours of talk-time. Its companion app lets you track your headset and get more out of it. You can get one for under $130.