Brand NEW! Optical - Wireless - Radio Frequency - 2.40 GHz - No - Black - USB - 4800 dpi - Trackball, Scroll Wheel - 7 Button(s) - Symmetrical Meet one of the newest models of the Adesso trackball product line, the Adesso iMouse? T40. It incorporates the claw grip design where each user can rest the entire hand over the mouse. The trackball location allows users to move the cursor by rotating the trackball with their fingertips to reduce the need of hand movement. It is cable-free by utilizing the 2.4 GHz radio frequency technology, offering a wireless range of up to 30 feet. It's also fully programmable, meaning every mouse button can be customized to your preferred function with its programmable driver. With its 5 levels of DPI resolutions (400-4800), the optical trackball provides superior accuracy and smooth motion, reducing hand movement and space. This mouse trackball is also easy to maintain - just push trackball outward from back, clean and push it back in place. Its ergonomically contoured large size trackball further completes its ergonomic advantages, making your daily computing tasks more comfortable and stress-free. Product Type: Mouse Pointing Device Connectivity Technology: Wireless Pointing Device Wireless Technology: Radio Frequency Wireless Operating Frequency: 2.40 GHz Movement Detection: Optical Movement Resolution (dpi): 4800 Number of Total Buttons: 7 Scroller Type: Scroll Wheel Scroller Type: Trackball Ergonomic Fit: Symmetrical Rechargeable: No Interfaces/Ports Pointing Device Host Interface: USB Battery Information Battery Included: Yes Product Color: Black Height: 2" Width: 4.5" Depth: 6.6" Weight (Approximate): 9.60 oz Package Contents: iMouse T40 - Wireless Programmable Ergonomic Trackball Mouse USB Wireless Receiver 2 x AAA Batteries Quick Start Guide Operating System Compatibility: Windows 10 Operating System Compatibility: Windows 2000 Operating System Compatibility: Windows 7 Operating System Compatibility: Windows 8 Operating System Compatibility: Windows Vista Operating System Compatibility: Windows XP Device Supported: Desktop Computer Environmentally Friendly: Yes Environmental Certification: RoHS Environmental Certification: WEEE Environmental Certification: WERCS Country of Origin: China - All international buyers are responsible for all tax, duties and/or customs fees.