Sennheiser DeskMate Dual-Ear for Your Home Cordless Phone (2.5mm) Connects to most home cordless phones via 2.5mm connection Unparalleled 4-year full-replacement warranty Unparalleled comfort  with a leatherette ear cushion, flexible headband and German design, the DeskMate is the most comfortable headset in the world Noise-canceling microphone keeps conversations crystal-clear