KENSINGTON SlimBlade Pro Trackball

You can enjoy the precision and ease of a finger-operated trackball that includes Bluetooth, 2.4 GHz wireless and wired capabilities, as well as unique dual-sensor ball-twist scrolling. All in a sleek design that saves valuable desk space and can be used with either hand. It's the ultimate in accuracy, comfort, and control.
Product Description: Kensington SlimBlade - mouse - RF | Device Type: Mouse | Connectivity Technology: Wireless - RF | Dimensions (WxDxH): 13.3 cm x 15.3 cm x 5.6 cm | Weight: 285 g | Localisation: Europe | Wireless Receiver: USB wireless receiver | Movement Detection Technology: Laser | Features: Scrolling ball, battery indicator | Battery: AA type | Manufacturer Warranty: 3-year warranty