Forget the old-fashioned tape measure. This lightweight, super accurate digital ruler will transform your spatial intelligence in ways you'd never have imagined! Have it always in your pocket and start measuring, from the length of your finger to how spacious your backyard is. Enjoy! Overview: - Mini size, convenient and practical. - Lightweight to 35g, compact and portable. - 8 functions, simple operation with three keys. - 99 meters long distance measurement. - Lithium battery direct charge, 200 days long standby. Product information: Shell material: aluminum alloy + silica gel Screen: 1.8 inch va lcd display Shell technology: fine polishing + frosted sandblasting Screen coverage: 4h super hard Size: 53*15mm (diameter * thickness) Net weight: 35g Single measurement distance: up to 9.99 meters Cumulative scale: maximum 99.99 meters Accuracy: 0.5%, stepless support adjustment Backlight time: 30-180 seconds Buzzer: On/Off Battery: 200mah 0.74wh Tips: The product function does not include laser and infrared Packing list: 1 x electronic ruler 1 x type c charging cable