1.WHATS compatible with? - The USB Rechageable training equipment is compatible with body training. This Ultimate ABS Stimulator can help to tone, tighten and strenghten your body, you can gain a better figure after consecutive use of this product compatible with about 2 months.2.HOW TO USE? - To begin use simply apply the gel pads to your abs,then turn to desired intensity level.This ultimate abs stimulator defaults to 20 minutes and automatically turns off the power after no operation.It's designed with power self-check function. Only when you stick the gel pads to your body, can the controller start working please read the instructions becompatible withe use,tailored to fit the contours of your abdomen to stimulate your body3.FLEXIBLE & PORTABLE -This Abs stimulator charges with a USB port, fast charging and durable. Carry the "gym" with you to activate your sports cells anytime anywhere, no need to worry about not having time to exercise. Solve the troubles of fitness, so that exercise is no longer hard4.HOW LONG SHOULD I USE IT? -About 18 minutes/time, 1-2 times a day. Equivalent to 2,000 meters of running, 60 minutes of sit-ups, 60 minutes of free swimming, and 2 weeks of diet5.WHY CHOOSE THIS? - Designed with ergonomics targeting abdominal muscle exercise. Fix the fitness gear to the position where you want to strengthen your muscle. Just press the button to start the exercise. There are 6 modes and 10 intensities are optional to help fat burning and muscle growing. Each EMS machine can be adjusted individually. You can select different mode and intensity respectively to meet your desired muscle training effect.