GoolRC Vertical Mouse - USB

Do you feel painful especially for your neck, shoulders or wrist when you need to use the mice for a long time without a comfortable angle? Are you worried about the strain and fatigue of your wrist joint? This vertical optical mouse is ergonomically designed to alleviate strain on wrists with cozy comfortable pinky finger & thumb rest and a full contour shape seamless palm supporting, healthy and efficient. Specification: Type: left hand Material: ABS Color: Black Engine: Optical Number of Keys: 5 Connection: Wireless Resolution: 800-1200-1600 DPI Power supply: 2 dry battery(not included) Operating system: for Windows 10, Windows 8, Windows 7, Windows XP, Vista, ME, 2000, Mac OS and other OS Item size: 12.5 * 8.2 * 6.5cm / 4.9 * 3.2 * 2.6in(L * W * H) Item weight: Approx. 108g / 3.8oz Package size: 13 * 9.2 * 7.5cm / 5.1 * 3.6 * 3in(L * W * H) Package weight: 142g / 5oz Package list: 1 * Wireless Vertical Ergonomic Optical Mouse 1 * Nano Receiver (Stored under the mouse) 1 * User Manual(English & Chinese)