Features: With this handfree pedal, you can easily turn page of electronic music scores, PPT, album pictures, short videos and so on. With low delay, fast transmission speed and more stable performances. Support up, down, left and right page turning, simulating finger page turning. Four page turning model can be easily and freely switched to meet various needs of users. All functions can be realized by a single foot switches, which is simple and easy to use. Builts in rechargeable battery provides continuous service time of more than 73 hours. Support automatic shutdown to save electricity. You can define series of keyboards and mouse action combinations, such as setting Ctrl+P delay for 100ms and then pressing enter to realize automatic printing. Specifications: Size:Approx.55x52x30mm/2.17x2.05x1.18inch Color:Black/White Styles:PT23/PT23A Endurances: continuous use for 73 hours Product weight: about 37g The differences between PT23 and PT23A: PT23A can be used for computers and mobile phones, and can be customized. PT23 can only be used for mobile phones and cannot be customized. Package Includes: 1 Set Wireless Foot Pedal Page Turner note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual coloring of the item. Thanks for your understandings.