Apple AirPod Pro original 1st generation, left side only no case, worked last time it was used however it will probably need a battery replacement, I put it in the charger for the AirPod Pro 2 and it registered in the case that it was charging but just got warm and never came on when removed from case after charging, so it’s being sold as is parts or not working requires repair, if you know how to replace the battery and have the time it’s a good AirPod still if it gets a battery, thanks for looking.
eBay