Secondly:16 Operation Programs: There are 16 operation programs for you to choose .Each massage programs have 20 intensity levels
Thirdly: TNS (Program 2, 3, 4, 6, 8, 9): To be used for temporary relief of pain associated with sore and aching muscles in the shoulder, waist, back, upper extremities (arm), and lower extremities (leg) due to strain from exercise or normal household work activities.
Fourthly: It is intended to be used to stimulate nerve for temporary relief of sore and aching muscles in the shoulder, waist, back, due to strain from exercise or normal household work activities.
Fifthly: Rechargeable :The Lithium battery can be recharged through both AC adaptor and computer USB input. When charging is finished, the LCD will show full cell of battery.