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 be impossible to slip away. 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, , 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.