GSR2 - BIOFEEDBACK RELAXATION SYSTEM -mint in box, 1970's tested

For Sale: Tested and working mini Galvanic Skin Response biofeeback device.

Complete with Instruction Manual, earphone, "velvet" pouch, reg. card, and main unit. Works as expected- you put your fingers on the two metal contact strips, tune in the audio level,and the tone changes as you begin to relex. Built in speaker (not very loud but works) or use with the inclued earphone.

Takes one standard 9 volt battery. Mint or near mint condition, some shelf wear on box.

Email for additional higher resolution photos.

Email your zip code for a shipping cost quote - should be between $5.99 and $6.99 if you are in continental United States. (May 2018).