Electrical waist and abdomen stimulator: • 6 vibration modes and 15 adjustable intensity levels. •It uses EPS and EMS low-frequency technology, muscle stimulation to promote circulation and relax the waist, abdomen and back. •USB rechargeable, allows you to use it anywhere, anytime. •Flexible and non-slip design, portable and safe. •Digital information display, easy to operate and use. Power supply: DC5V USB Rated power: 5W Technology: EMS microcurrent stimulation Standards: GB47061-2005; GB4706.10-2008 Usage temperature: 10-40°C ABS, breathable fabric + spandex, PVC, and metal alloy.