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. Slope shape, which makes it convenient to step on. There are four anti-skid pad on the back of pedal. When you put the pedal on the ground and step on it, it will be impossible to slip . It is safe and stable to use this page turner. Features: Silent pedal, Bluetooth control, USB control. Name: Multifunctional pedal Interface type: type-c Supported systems: IOS, Windows, Android, OS, Linux Colour:black Material:ABS Size: 16.99 x 11.00 x 2.31 cm Package Contents: 1 x Wireless Pedal 1 x Charging Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.