2.4GHz Wireless Technology -- ensures fast and stable transmission and longer working distances up to 33 feet / 10 meters. Professional Optical Positioning Technology -- for more accurate positioning. Intelligent mini-receiver, automatic connection, no need for complicated code. With DPI Adjustable Function -- any 360 around the use angle. Press the DPI button to change the cursor sensitivity based on your activity. Ergonomically Designed -- the mouse cover fits perfectly into your palm. The symmetrical design makes it suitable for both hands. patterns on the side are suitable for eliminating hand fatigue. The number of button life can 300W times, the click effect is better, the use comfort is improved, no noise, and quieter. Using the latest infrared lighting technology, it is more energy-efficient, energy-saving and environmentally friendly, and enjoys a low-carbon life.