1. EEG Hat, 20/32/64/128 leads for physical therapy 2. Humanized Design and good ... 3. Excellent Quality 4. CE&ISO EEG Hat, 20/32/64/128 leads for physical therapy Electrode; AgCl/Tin plated> CE ... ?Second, how many leads you need? 20 leads, 32 leads, 64 leads, or 128 leads.If you need the customized EEG ... detailed communication.Various models as following: EEG Hat, 20/32/64/128 leads for physical therapy