Modular cable, 4-core, approximately 2.8m, with a clamp core (clamp filter) attached. This is an accessory that came with a newly purchased telephone. I temporarily connected it once on the day I bought the phone. The cable was too long, so I bought a separate cable and set up the phone. This modular cable accessory was immediately removed and stored on my desk. The product will be packaged with water damage protection and cushioning material, and shipped via Yu-Packet Post. RJ-11 modular cable, AWM 20251 standard, supports up to 150V, 60°C. - Connector type: RJ-11 - Standard: AWM 20251 - Temperature range: 60°C - Voltage: 150V Thank you for viewing.