Six functions of hammering, acupuncture, naprapathy, scraping, cupping and massage as AK-2000.

        AK-2000-II is more advanced for its LCD , timer, three different automatic prescriptions on neck and back, waist and leg ,and foot. "Repetition" key can lock the optimum stimulation instantaneously. I think the II model offers a device that one can put in your pocket and do some exercise at the same time, or take it to work conveniently and have some stimulation at work, or on the bus, or on the way home. It is very convenient..............