There are four anti-skid pad on the back of pedal. When you put the pedal on the ground and step on it, it be impossible to slip away. It is safe and stable to use this page turner. Slope shape, which makes it convenient to step on. The pedal is designed to turn only one page at a time when the pedal is pressed, no matter how long the pedal is pressed. The pedal should be powered by type-C cable. Features: Silent pedal, Bluetooth control, USB control., Weight: 0.63713593718 pounds, Manufacturer: puhae