So you want wireless earbuds? I think that a lot of what you'll find as earbuds will be more like volume amplifiers or cellphone/gaming headphones. Maybe that's what you want.
I've been told that Sennheiser's wireless headphones are pretty decent, though a lot of other quality headphone manufacturers (Grado, Shure) don't make wireless devices at all, which might tell you something about the compromises introduced by wireless transmissions in the first place.
You might be better off with a Yamaha sound projector, which can focus sound on a particular spot and minimize the need for room-filling volume.