This is an accessory pin designed to protect the Φ3.5mm headphone jack and Lightning connector. It's compatible with iPhones, iPod touches, and iPod nanos that have a 3.5mm mini-plug size headphone jack and a Lightning connector. 4536219830443 I bought this new a few years ago, but it didn't fit my device, so I never used it. It's new and unused, but it has been stored at home by a private individual. Please understand that it may not fit many models, so please purchase only if you understand this.