This David Clark H10-
The headset is fully guaranteed for 2 years, parts and labor. A new headset will cost you $300 plus. You can get this one for much less and it is guaranteed. It will work in all GA airplanes, Cessna's to Lear Jets.
When I refurbish a headset I take it apart and inspect the parts and replace the ones that are cracked, torn, engraved, bent, frayed or don't work.
Each headset is different. I replace the wind screen, ear filters with new on all headsets. If the padded headband is faded, torn or dirty I replace it with one that I have machine washed and redyed black. If the Gel ears seals are leaking I replace them otherwise I clean them.
I try very hard to send a headset that looks good and will give many years of service at a decent price, I know all of us who fly are on a tight budget.
If you are not completely happy you may return it for a full refund.
Why buy a used headset of unknown quality when you can get this one worry free!