・Sennheiser HD Series: HD560S, HD599, HD598, HD579, HD569, HD559, HD558, HD518. 🔒Bayonet Lock Headphone Connector. 🎧 Headphone Connector: 2.5mm 3-Pole Bayonet Lock (Gold-Plated, PBT Mold). Precisely molded PBT resin connector ensures firm locking while minimizing wear on the headphone socket.
eBay