I purchased this EMS abdominal muscle band six months ago, but as I have several similar ones, I'm selling it to declutter. Below is the product description from the manufacturer: 【Highly Effective】The EMS abdominal muscle band adopts improved micro-current technology, which vibrates muscles with specific frequency micro-currents to achieve an exercise effect. The exercise efficiency is more efficient and convenient than traditional exercise! Recommended for those who lack exercise or need to build a beautiful body! It is recommended to charge before use. 【Train Seriously in Just 20 Minutes】The EMS abdominal belt has an exercise effect even if you do nothing, and you can move your muscles without being conscious of it. Compared to other similar products, it has a higher degree of adhesion to the abdomen and is less likely to slip, making it suitable for use during housework, work, and exercise. When using, make sure to firmly apply the hydrogel patch to your skin. If there are gaps in the parts, the current will not flow evenly throughout the parts. 【6 Modes & 19 Intensity Levels】6 modes and 19 levels of intensity can be adjusted according to your purpose. It is equipped with a 20-minute automatic off function, so you don't need to worry about the time. 20 minutes of exercise with the abdominal belt is equivalent to 2000m of jogging, 40 minutes of freestyle swimming, and 40 minutes of abdominal muscle training. It satisfies the needs of beginners, women, especially office workers and those who lack exercise, and is an ideal training device for easy training. 【Economical USB Rechargeable & Easy to Clean】This convenient EMS machine can be used wirelessly, and it adopts a rechargeable system that does not require battery replacement, and can be used for about 20 hours on a full charge. The abdominal muscle training device's included controller is equipped with an LCD screen that displays the mode and intensity, and you can check the operating status (mode type, intensity level) when wearing it on your body, allowing you to enjoy training more safely and clearly. 【Can be Used Anywhere】With its simple operation and compact body, it can be worn anywhere, such as at home, in the office, or at the gym. The belt is ultra-thin and can be easily carried in a suitcase for travel and work trips. It can be used on multiple areas, fitting the waist, thighs, and buttocks.