I bought one of these. I can't really understand the korean manual. So, I just follow the image. I didn't know that two times press on minus sign make the electric strong. It really hurts like I have been electrified by a live wire. It hurts on some sensitive parts like the back of my leg. Some pain leaves my body when I use this but I still feel the electricity in my muscles on 30 minutes after I turned it off. Sometimes my heart feel like its going to a surgery because I feel the elctricity in my heart even though its in my arm. BUT OVERALL IT IS GOOD BUT RISKY AND HURTS.
The delivery is ok and I can’t wait to use the products
this nifty portable work out is so convenient! I love this and wish there was more pad sizes to choose from!