The Pilot Classic P51 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.  

Features include:

• Noise Atenuation: 22dB
• Music/Cell Input:  Yes
• Boom Type: Metal ball joint swival 
• Earseals: Liquid
• Headpad: Air-Foam
• Microphone: PA5 Electret
• Volume: Earcup control 
• Stereo/Mono: 
• Com Cord: Attached
• Weight: 14.4oz
• Warrenty: 5 Years
• Extras: Chrome PJ-068/PJ-055 plugs
• Vibration proof circuit board
• Wired in parallel for reliability