Use with disc electrode, conductive paste and scrub paste.The positioning is based on the international 10-5,10-10,10-20 system, convenient for electrode positioning operation.The cap leather is made of elastic silica gel, which is comfortable to wear and suitable for most heads.The disk-shaped electrode is fixed on the elastic mesh cap, which is convenient for positioning and soft for mold cover. It can relieve the wearers' feeling of pressure and is convenient for wearing and cleaning.It is used for eeg monitoring, eeg monitoring and polysomnography monitoring.