- They have a round 3.5mm plug, so do need an adapter for iPhones (these are about $14 from Apple resellers).
- The last 15.5cm is made from hollow plastic tubes allowing sound to travel to your ears without wires.
- The wires (in the lower portion) are braided to reduce magnetic fields.
- There is an answer-hang-up button near the microphone.
- These have a sturdy joint where the wires separate. That said, do be gentle with them.