The P51 PTT is a superb entry level passive headset. Its proven reliablity has made it a top choice for many flying academies across the world. 
A very robust and rugged headset this is certainly a great affordable choice. Has got PTT on the cup.
Features include:
Boom Type: Metal ball joint swival
Earseals: Air Foam
Headpad: Air-Foam
Microphone: PA5 Electret
Volume: Earcup control
Stereo/Mono:
Com Cord: Attached
Weight: 14.4oz
Warranty: 5 Years
Extras: Chrome PJ-068/PJ-055 plugs
Vibration proof circuit board
Wired in parallel for reliability