STAR SHINNING Vertical grip mouse mouse 2.4GHz wireles charging upright vertical mouse 5 Button Ergonomic wireless Mouse(Blue) Built-in 500 mA lithium battery;No need to buy batteries;2.4GHz; DPI: 800-1200-1600, hand dimensions: 180 mm. Accessories: USB charger, receiver Type: Optical Mouse; Buttons: 5