Twice the battery life of a typical analogue device * Package Includes: Device  batteries  lead wires  1 pack of 4 electrodes  carrying case and users manual * Dual channel device with 3 modes of operations(B  N  and M) * Unit uses 2 AA batteries * Pulse width  pulse amplitude  and timer are all adjustable *  It is also equipped with a 30  60  90 minute timer  and has a protective cover over the controls * Nerve stimulator is a device used to treat chronic pain  and pain associated with active or post- traumatic injury unresponsive to other standard pain therapies * 7 pulses per burst  2 bursts per second  100Hz fixed frequency * Pulse width is automatically varied in a cyclic pattern over an interval of nominally 4.0 Seconds * Continuous output with adjustable amplitude  pulse rate  pulse width * HCPCS Code : E0720/ E0730 * 1 year warranty on the device