Sony MDR-E9LP. Type of product: Earphones, Wearable Headphone Style: Headphones, Recommended use: Music. Connectivity technology: Wired, Plating Connector Contacts: Or. Ear coupling: Intra-aural, Headphone frequency: 18 - 22000 Hz, Impedance: 16 Ohm. Weight: 6 g. Brand compatibility: All marks