[What is EMS: EMS (Electrical Muscle Stimulation)So it will slightly sting your skin. Please note: before using it please use a towel wet your skin. Wet skin will help you to ease sting feeling. Smart Design & Adjustable Size: ABS muscle toner design with a length of 47.2 inches fitting for a waist up 25 inches to 50 inches. The belt is made of up which is comfortable durable. Powerful Modes: The abs workout equipment has 6 exercise modes each of which will have a new sense of experience. There are also 19 levels of stimulation intensity from warm-up to high-intensity exercise. Easy to Use: Just press the button and start exercising. About 30 minutes/time 1-2 times a day. designed for abdominal training which is perfect for fitness enthusiasts sports fans and lazy people. "Flexible and Portable: EMS Muscle Stimulator can be used at any time and anywhere. Just wearing the EMS fitness belt when you're caring baby housing or working your muscle can be tightened and strengthened."]