Pageflip Dragonfly, USB Bluetooth Pedal with Four Buttons, Easy browsing of digital content such as sheet music, eBooks or scanned documents, Delay-free page turning, Typical battery life (2x AA): 200 Hours of continuously pushing buttons or about 200,000 page turns, Connectors: Wireless via Bluetooth 3.0 or USB cable, Sleep mode (shut off after 30 minutes of inactivity), reactivated from sleep mode by pressing the pedal within 3 seconds, Preset Modes: Page up/down, arrow left/right, arrow up/down, left/right mouse click, Spacebar/Enter, Pedal Modes can be programmed via Dragonfly for Windows 10 (64 bit) and Mac OS 10.9 and later, USB cable included, Dimensions (W x H x D): 178 x 166 x 59 mm, Weight: 300 g