Kensington Pro Fit Ergo Vertical Wireless Trackball - Optical - Wireless - Bluetooth/Radio Frequency - 2.40 GHz - USB Type A - 1500 dpi - Scroll Wheel - 10 Button(s) - Right-handed Ergonomist Approved Design Promotes proper wrist, arm, and shoulder alignment to maximize comfort and minimize potential strains. Easy to Use Reduces learning curve when transitioning from a mouse to a trackball. Premium Precision and Speed Provides more accurate and smooth cursor control, and allows you to easily switch between DPI settings for different cursor speed control. Flexible Wireless Connection Options Allows stable connectivity for up to three computers. Plug-and-Play or Customize Experience plug-and-play default settings or use KensingtonWorks software to set pointer and scrolling options and professionally customize nine buttons to tackle common tasks with one touch. Unique Easy-to-Clean Design Provides a button to eject the trackball for easy cleaning. Long Battery Life Works for up to 18 months on two AA batteries (included). The battery indicator light eliminates surprises. Battery life may vary based on usage. Give your hand a healthy break. Upgrade to ergonomist-approved comfort and premium cursor control with Kensington's Pro Fit® Ergo Vertical Wireless Trackball. A 60° tilt angle keeps the wrist in a natural handshake position to improve wrist and forearm posture. This mouse-like vertical trackball is easy to learn and it and offers 9 programmable buttons. All-day comfort is provided through an ergonomist approved design featuring a 60-degree tilt and natural handshake position to improve wrist and forearm alignment. Easy to use, with the same left click, right click, and scroll wheel operation as a traditional mouse, while providing the advantages of a trackball with a simple roll of the thumb. The high-quality optical tracking sensor, 34mm thumb-operated trackball and triple DPI switch provide smooth cursor control, optimal precision and easy cursor speed transitions. Flexible wireless connection options let you connect your vertical trackball to up to 3 different devices - one via the 2.4GHz nano dongle that stows inside the trackball body, and two additional connections via Bluetooth. Experience plug-and-play default settings or use KensingtonWorks software to set pointer and scrolling options and professionally customize nine buttons to tackle common tasks with one touch. Unique, easy-to-clean design features a built-in trackball ejection button to effortlessly remove the trackball to clean dirt, grime, and germs - and keep the trackball functioning smoothly. Works for up to 18 months on two AA batteries (included). The battery indicator light eliminates surprises. Battery life may vary based on usage. Manufacturer ACCO Brands Corporation Manufacturer Part Number K75326WW Brand Name Kensington Product Line Pro Fit Product Name Pro Fit Ergo Vertical Wireless Trackball Product Type Mouse Pointing Device Pointing Device Connectivity Technology Wireless Pointing Device Wireless Technology Bluetooth/Radio Frequency Wireless Operating Frequency 2.40 GHz Movement Detection Optical Movement Resolution (dpi) 1500 Number of Total Buttons 10 Scroller Type Scroll Wheel Ergonomic Fit Right-handed Interfaces/Ports Pointing Device Host Interface USB Type A Miscellaneous Package Contents Pro Fit Ergo Vertical Wireless Trackball Wireless USB Receiver 2 x AA Batteries Device Supported Computer Country of Origin China Environmentally Friendly Yes WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov. Please understand , this is only one of over 100,000 products offered for sale by antonline and shipped from our many different automated warehouses. There are no local stores or pick up. All the product information we have is provided by the manufacturer and in the item listing. Manufacturers change colors and item details frequently and often do not update pictures. We have no personal knowledge or experience with this product or ability to customize it. All items ship as addressed in an automated warehouse. The time to process and ship is listed prominently in each listing. It usually takes about a week to get your item. It may be faster or longer as shown in the listing or if credit check or special handling is required. There is no human intervention in the process. That is how we control costs and keep our prices so low. Paypal requires that we only ship to the verified Paypal address provided with the order. NO ADDRESS CHANGE IS POSSIBLE. Atlanta Network Technologies, Inc. We accept payment by: Paypal. Shipping to: United States Excludes: Alaska/Hawaii, APO/FPO, US Protectorates, PO Box. Antonline eBay Return Policy Returning an item purchased from antonline is easy and fully automated with our "Hassle Free Return Program". Please email to request an RMA link.