This electrical muscle stimulation is great for abdominal, arm, leg, hip, that can help you tones, tightens, and strengthens body muscles. It has 6 modes with 10 intensity levels to help with burning fat and muscle growing. The rechargeable battery comes with a USB cable to provide you with better toning than other battery powered muscle toners and in addition, it provides longer and stable power. This eco-friendly energy saving wireless stimulator is thin and lightweight and can be transported in the gym bag, suitcase etc. Within 8 to 10 weeks of use 2 to 4 times per day for above 20 minutes at a time will show obvious effect with no harm to your body.