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  1. BVP/HRV Finger Sensor for Physiocom GP-4 , GP-8 & GP-12
    Blood Volume Pulse (BVP) Finger Sensor for GP-4 , GP-8 and GP-12 biofeedback devices from Physiocom Designs (formerly J&J Engineering). Can be used for Heart Rate Variability (HRV) training Learn More
    $30.00
  2. Plastic EEG Ear Clips - 2 pack
    EEG Ear clip with 17mm Silver Silver Chloride pellet sensor - use with J+J Engineering I-330 systems or any snap cable. Learn More
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