1Dual Light Sensing Holes: Our high accuracy handheld distance meter has dual light sensing holes to enhance optical compensation and improve efficiency. 2Aspheric Optical Focusing Mirror: Handheld distance meter adopts aspheric optical focusing mirror to enhance reflected light reception, accurate and stable measurement, fast and low power consumption. 3Data Storage: Handheld distance meter has 99 sets of data storage saved at any time, so you can view and compare the data at any time when you need. 4Millimeter Level Accuracy: The handheld distance meter has high strength and large range measurement while ensuring millimeter level accuracy. 5Aluminum Alloy Material: The handheld distance meter adopts integrated molding, high accuracy mold once cast, aluminum alloy material for better protection of the body.