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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
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
Specially designed custom C cell Nickel Cadmium batteries. encased in a plastic tube housing. Fits all Autogenics AT series monitors. For AT-42, AT-33 and AT-64 . 4 batteries per tube. Learn More