This is the flagship model featuring three balanced armature drivers, an evolution of the Etymotic Research ER4SR manufactured between 2022 and 2023. Purchased new and kept as a spare, it has only been used for testing and listening, and has been carefully stored. Only the rightmost triple-flange eartip shows slight discoloration. - Model Name: EVO - Cable Type: BAX 72 Over-Ear - Color: Black - Connector: 3.5mm - Carrying Case: Included Thank you for looking.