We are the manufacture of TENS machine in Guangzhou China for more than 12 years. AK-2000-II has Medical CE certificate (CE0123) Guangzhou Aukewel Electronic Co., Ltd website www.aukewel.com.cn Tel:86-20-84790445(84790479) Fax:86-20-84790507 Home care Body pain Massage, Acupuncture electronic Tens Unit Stimulator / Stimulators: Tens Unit Stimulator (1) Function: Hammering, Acupuncture, Naprapathy, Cupping, Scraping and Massage. (2) Three automatic mode: Neck/Shoulder, Waist/Leg, and Foot (3) Unique design of 2500Hz to make its therapeutic function penerate into the skin. (4) "Repeat" key can lock the best stimulation. (5) LCD screen: Visualized display of body's applicable postion. (6) Timing design with six sections of countdown, 5 minutes for each. Packing: 22pcs/carton Gross Weight: 16kgs Measurement: 65 x 29 x 47.5 CM