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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
    Now Only $22.50 Regular Price $25.00
  2. J&J Input Extension Cable
    Input extender for the J&J C2+ 12 channel and 6 channel systems. Learn More
    Now Only $36.00 Regular Price $40.00
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