Technical specifications
Power Source: Two AAA 1.5 volt batteries (included). Replace with disposable batteries (lithium preferred).
Timer Settings: 20, 40 or 60 minutes.
Current: 0 to 500 µA adjustable in 50 µA increments.
Frequency: 0.5 Hz (pulses per second).
Waveform: Bipolar asymmetric rectangular waves, 50% duty cycle, 0 net current.

Five year warranty
Each Alpha-Stim® AID is warranted to be free from defects in materials and workmanship under normal use for a period of five years except for replacement of batteries and accessories. See Owner’s Manual for complete details.