Accurate Measurement: Class II infrared rangefinder with MAX OUTPUT <1mW, λ=620-690nm, offering accuracy up to ±1/16 inch. Upgraded dual-tube structure reduces temperature-induced errors; dual bubble levels ensure horizontal measurements for enhanced precision. Multi Function: Measures area, distance, volume, with continuous measurement and Pythagorean methods. Addition/subtraction mode for efficient calculations; continuous mode records max/min values. Wide Application: Completes most measurements in 0.5 seconds, ideal for homes, rooms, backyards, construction sites. Suitable for carpenters, realtors, landscapers, painters as a quick alternative to tape measures. Portable & Durable: Weighs 3 ounces, compact for toolbox/pocket. IP54 rating protects against water splashes; made of sturdy ABS material. Specification: Material: ABS; Measuring range: 40/60/80/100M (optional); Measurement accuracy: ±2mm; Temperature range: -20-40℃; Maximum storage: 20; Battery type: 7 batteries*2 (not included). Packing list: 1 x Rangefinder, 1 x Lanyard, 1 x Manual. Color: As shown in the picture.