(1) It has a total output current capacity of greater than 120 milliamperes across all four channels.(2) The increased adiposity around the wrist may require, however, higher milliamperes to produce the desired result.(3) That version is a cradle-type design that uses a thumb-sized cartridge containing methanol at a concentration of 30 percent to provide an output of 5.4 volts at 700 milliamperes .