This is the best quality Headset  with Push-To-Talk switch. You don't need to worry about head or ear size. All adjustable rubber Ear loop with Ear bud and flexible! Just plug it into your cell phone  for convenient hands-free talk! It  fits  for both right and left ear also rubber ear loop design assures a comfortable fit. In-Line PTT button works for Sprint PCS Ready Link features. Push PTT to answer incoming phone calls. Satisfaction Guaranteed.

Compatible with : Nextel i930, i920, i880, i875, i870, i860, i855, i850, i836, i835, i830, i760, i733, i730, i710, i670, i605, i580, i570,  i560, i530, i450, i415, i355, i325, i315, i305, i285, i275, i265, i215, i205, ic402, ic502, ic602, ic902

Nokia 33XX, Universal.E105,T28,C56