Kensington SlimBlade™ Pro Wireless Trackball, Rechargeable Battery, Bluetooth 2.4GHz Connection Options (K72080WW) & Expert Wireless Trackball Mouse (K72359WW) Black, 3.5" x 6.1" x 8"

• Product 1: Includes choice of Bluetooth, 2.4GHz wireless and wired connection options for maximum flexibility. Compatible with Bluetooth BT4.0/BT5.0. Features 2.4GHz wireless dongle (USB-A with USB-C to USB -A adapter) and 1.5m USB-C to USB-A charging cable (USB-C port on the trackball). Product 1: Rechargeable battery provides 4 months battery life with single charge via USB-C port Product 1: Low-profile shape allows all-day comfort for both right-handed and left-handed users. The trackball takes up less desk space than what is needed to operate a mouse and is more comfortable during extended use because it requires less arm and wrist movement. Product 1: Dual sensors accurately track the large 55mm ball, giving users better cursor control that requires less hand and wrist movement. Provides highly accurate and responsive cursor tracking and scrolling. Product 2: Large 55mm ball design and Diamond Eye optical tracking for precise cursor control. Patented scroll ring lets you scan up and down pages with ease Product 2: Detachable, ergonomic wrist rest supports hand and wrist for improved comfort. Ambidextrous design Product 2: Customizable 4-button design, scroll speed and cursor speed via KensingtonWorks software Product 2: Connects wirelessly via built-in Bluetooth 4. 0LE or with the USB dongle using 2. 4Ghz wireless. Auto-sleep helps conserve battery life