Product Description Handheld portable USB charging 40M smart digital mini laser rangefinder This portable laser range finder with palm size, widely used in interior decoration, indoor design, construction field. It can measure distance, area and volume accurately, quickly and conveniently with a wide range of 40M abd accuracy up to 2mm. Features:Multifunctional, measures distance, area and volume accurately, quickly and conveniently.Wide measuring range 30M/40M with a high accuracy up to 2mm, accurate and efficient.20 data memories, allows to check the most recent measurement freely.Switchable among meter (m), inch (in), feet (ft), convenient to read the measuring results.Reinforced shell is dustproof and IP54 waterproof, can be used in the outdoor environment.Large LCD with backlight, help to see the date clearly in low-light conditions.Handheld design makes it portable and lightweight to take for measuring.Widely used in interior decoration, indoor design, construction field. Specifications:Color: blackMeasuring Range: 0.05-40mMaterial: ABSMeasuring Time: 0.1-3sDisplay: LCD with BacklightAccuracy: 2mmMeasurement Unit: m / in / ftLaser Cla: Cla IILaser Wavelength: 635nmLaser Output: <1mWWater-proof and dust-proof grade: IP54Laser Auto Off: 30sPower Auto Off: 480sMeasurement Reference Switch: YesPower: rechargeable lithium battery(200mAh)Operation Temperature: 0~40 / 32~104Storage Temperature: -20~60 / -4~140Item Size: 100 * 32 * 12mm / 3.94 * 1.26 * 0.47in (L * W * H)Package Size: 135 * 70 * 35mm / 5.31 * 2.76 * 1.38in (L * W * H)Item Weight: 30g / 1.06ozPackage Weight: 102g / 3.60oz