V-Probe, 32ch, 15µm elect dia, 100µm electrode spacing, 75mm total length(25mm; 640µm dia reinforcement tube); 260µm probe dia;CON/32m-V connector interface; 450µm tip to 1st site; Channels 1, 2, 5, 7, 11, 13, 18, 27, and 29-32 are not working.