I've had a 620, 630, and 830. On my 620, headphones with iPhone controls didn't work. I scrounged around for a pair that had a single universal button. I ended up with a pair of Philips Fidelio M1 (on-ear). I initially was shipped a pair of M1i, which had the 3 button iPhone control. Philips makes in ear versions S1 and S2. However, on the 630, and 830, my at home pair of Fidelio L1 which only had iPhone style controls, the button works. Once for pause, twice for next, and thrice for back. I *think* with the 830, most headphones with iPhone controls should work, but be advised that the volume up/down won't work.