Wide Profile Electrode, 1cm thick Ag-AgCl in an epoxy ring housing. Encapsulated with a durable epoxy coating that provides a long lasting, waterproof electrode. Can be used indefinitely with some care. 40” (100cm) cable length. Standard lead wires are PVC insulated multi-strand copper with internal Tinsel for additional strength. Easily cold sterilized and used for a variety of applications such as EEG, EMG, EOG, etc.