A:AnswerThe connector for these Sony ear buds are a standard 3.5mm auxiliary jack. If your Precor elliptical has a 3.5mm auxiliary port that supports audio out these will work.
A:AnswerYes. I have an A42 and they work wonderfully with it, even with a thick waterproof case attachment. I have not tried the little button feature, in fact I don't even remember what it does.
A:AnswerThat I'm not sure since the iPad Mini are structured a bit different than your regular size iPad. I would trust giving Best Buy Customer Service a call to make sure.