Description Off-table design for free and comfortable operation. It can greatly relieve palm joint or muscle damage for a long time using the mouse. 2.4GHz wireless connectivity with a working distance of less than 15m. Dolphin-shaped design with left/right clickers, suitable for left-handed and right-handed users. Perfect for laptops and desktops, place the tip of your index or middle finger on the trigger button and your thumb on the rollerball. Specification: Resolution: 1000DPI The effective distance is 15 meters. 2.4GHz interference-free design. Color: black. Size: 5611cm. Note: There might be a little color distortion due to different computer resolutions. There may be size errors due to different computer resolutions. Package includes: 1 * mouse. 1 * USB Receiver.