– What’s it for? — It’s for body muscle training. This muscle toner can help to tone, tighten and strenghten your body muscles, you can gain a better figure after consecutive use of this product for about 2 months. -What’s an EMS machine? — EMS (Electrical Muscle Stimulation) through current stimulation, directly send signal to muscles, and promote muscle movement. All you have to do is to fit the pads to your body and let them exercise your muscles. -How long should I use it? — About 20 minutes /time, 1-2 times /day. It equals to 2000M running, 60 minutes of sit-ups, 60 minutes of free swimming, 2 weeks of diet. -When should I use it? — You can use this EMS AB trainer anytime, anywhere. It’s super light, ultra thin, WEARABLE, and convenient to carry on. Body Fit Pad can be worn unobtrusively under your clothes, making it ideal for muscle training while readi. -What do you need to pay attention to? 1. Each machine requires 2 AAA batteries, we do not provide batteries, you need to buy it separately. 2. When you peel the gel pad off your body for about 15~20 times, you need change new gel pads.